Just the FAQs.

Browse common questions and answers.

(Also check out the User’s Guide!)

› General / Specs / User’s Guide / Pre-Sales
Is MegaSeg compatible with macOS High Sierra 10.13?
macOS High Sierra Compatible

Short answer, yes (with a caveat; see next paragraph) MegaSeg 6 works with macOS High Sierra 10.13, as well as older versions of Mac OS X going back to 10.6 Snow Leopard. (Make sure you have the latest version of MegaSeg 6 by using the “Check For Updates” command in MegaSeg’s Help menu.)

MegaSeg 6.0.5 includes a workaround that restores limited playback support for “Protected” DRM .m4p files, such as those used by the “Apple Music” monthly subscription service. However, to maintain full functionality you will need to stay on Sierra 10.12 or El Capitan 10.11 with iTunes 12.7.1 or older, as an issue in High Sierra and iTunes 12.7.2 has hampered full support of protected DRM music (m4p files). We've reported this issue to Apple, and they will hopefully resolve the problem in a future system update. In the meantime, the workaround that facilitates limited playback support in MegaSeg 6.0.5 should be sufficient for most people. See more info if you need to downgrade macOS and/or iTunes.

Finally, as with any major system upgrade, it’s wise to proceed with caution if you use your system in a “mission critical” situation. For example, you should always perform a full system backup first and foremost. You might then install the macOS upgrade on an external drive to test it out before you upgrade your Mac’s main drive. If you use 3rd-party peripherals such as MIDI controllers or external audio interfaces, you may also need to install new drivers or firmware updates for compatibility with the latest macOS versions.

Note MegaSeg version 4.5.1 and older does not support OS X Lion 10.7 and newer. Please upgrade to MegaSeg 6 for compatibility, and check out our Version History to catch up with the new features and improvements in MegaSeg 6.

What are the system requirements and compatible Mac models?

MegaSeg runs on any stock Mac that Apple sells today, including the MacBook and Mac Mini. The oldest Macs currently supported require Mac OS X 10.6 “Snow Leopard” or better with an Intel processor.

Is there a manual, user’s guide, or tutorial for MegaSeg?
MegaSeg User's Guide

You bet! There’s a comprehensive User’s Guide available in MegaSeg’s Help menu. (You need to run MegaSeg to view it, so download the demo already!)


If I lose the program, can I reinstall without paying again?

Absolutely. After purchase you’ll receive an email receipt with your download link and serial for safekeeping. Even if you lose that, our recovery system will get back up and running fast. Or simply contact us and we’ll be glad to help.

I lost my registration serial number. How can I retrieve it?

No problem! Use our recovery system to retrieve your serial, or contact us with your information and we’ll look it up for you.

How much are upgrades?

Minor updates are free (version 6.0 to 6.1 for example). Major version upgrades (x.0 or x.5) are a fraction of the full price. See our current upgrade pricing.

Can I upgrade the DJ edition to MegaSeg Pro?

Yes you can upgrade to MegaSeg Pro from both our direct and Mac App Store versions of MegaSeg DJ. Click the “Upgrades” tab at the top of our buy page and select the “Upgrade DJ to Pro” option.

How reliable is MegaSeg compared to a CD player?

We’ve had wonderful success with the stability of MegaSeg and macOS. Thousands of DJ’s and radio stations use MegaSeg worldwide without fail. It’s always a good idea to have a safety net just in case, and keep a backup drive or iPod with your music handy. (You can even install macOS and MegaSeg on your backup and boot from it directly.)

Do you make a PC version of MegaSeg?

Sorry, not at this time. MegaSeg’s stability and reliability builds off of macOS (and its solid UNIX foundation). Since Apple makes both the hardware and OS, everything runs smoothly (a difficult task on Windows due to the magnitude of hardware combinations!) This allows us to make better software for you, with fewer tech support distractions.

Macs are also replaced less often, staying in operation years longer than most PCs. Fewer tech issues and longer use — That’s money saved.

Also consider today’s Macs can boot Windows if needed. So when you get a Mac, you’ll have the best of both worlds. (With Parallels or Fusion, you can even run both at the same time!)

Check out the Mac Mini which runs MegaSeg perfectly for just $499. You can even connect it to your existing PC monitor and keyboard, or run it as a virtual system via VNC screen sharing.

I love MegaSeg, do you have a badge for my site?

Thanks we love you too! Yes you can copy one of the HTML codes below to embed a badge into your site...

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› Broadcasting / Radio Automation / Podcasting
Can MegaSeg stream to the Internet for an online radio station or webcast?

Yes. MegaSeg handles automation and scheduling for your online station, and you can stream its audio using any encoding tool, for example:

Note the Nicecast encoder captures MegaSeg’s audio directly, while other encoders use an audio routing tool called Soundflower (free) or Loopback to direct MegaSeg’s audio to the encoder. With Soundflower, open MegaSeg’s Settings > Devices tab and change Playlist Output to “Soundflower (2ch)”, and do the same for the encoder’s audio input.

Alternatively, if you have a physical mixer, you can route MegaSeg’s audio to the mixer and take its master output back into the Mac to be captured by the encoder. (Take care to prevent a feedback loop by either using a second USB audio device, or muting the encoder’s monitor output if possible.)

How can I use MegaSeg for podcasting or produce a radio show?

For specific audio routing and recording tools, see the answer under Audio Output / Recording. But here’s some workflow ideas on how you can use MegaSeg to produce a podcast or prerecorded radio show.

Generally MegaSeg is designed to work either on the station’s studio side of the equation (i.e. as on-air studio automation or live-assist playback system), or as an audio creation tool on a show’s production side. You can use MegaSeg to generate a small playlist and scheduling files that reference larger media for live mixing, or record the final mix into a single audio file such as for an hour long podcast or show.

There are many possible ways to go about producing a prerecorded show, and several hybrid variations. For example, there’s the live or real-time approach (i.e. the “one take to tape”), which gives the show a lively off-the-cuff talk show feel. On the opposite side of the spectrum is a segment produced, compiled, and edited approach. A hybrid example is attempting to record live, but stopping and starting at each flub or mistake, and going back and editing to clean things up, or connect the various live takes.

MegaSeg is a very useful tool in all these cases, as it gives you the ability to have all your media cued up and ready to go for a live record, including on-the-fly insert of sound effects, station IDs, or starting segments like music breaks, sponsor breaks, pre-recorded interviews, etc. These things can be played off-the-cuff, or pre-scheduled and lined up in the playlist queue, including special “Break Tracks" that pause for live talk segments. Alternatively MegaSeg can be used to assemble various show segments together seamlessly for a final audio file mix or live-to-air mix.

You can even route MegaSeg’s playback and your Mic audio into separate tracks into any audio editing tool of your choice (e.g. GarageBand, Logic Pro, Audacity, etc.) which gives you even further control over the final editing process. Or you can go the opposite direction, and record your voice intros and outros via those editing tools, and import them as separate files in MegaSeg to insert between music tracks or other media segments (i.e. voice tracking), and even setup a show format or schedule to generate a final mix automatically each week.

As mentioned at the start, please check out our recording article for a list of useful audio routing and recording tools that work great with MegaSeg and your existing production workflow.

How do I stream video to the net with MegaSeg?

You can use MegaSeg with any stream video encoder you wish by interfacing it with MegaSeg’s video and audio outputs. This can be done using either a dedicated video capture and stream encoder device, or install a stream encoder on the same Mac running MegaSeg.

The first option involves connecting the Mac’s video output jack (which MegaSeg outputs full screen video to) and connect it to the video capture input of your video stream encoder hardware.

The second option is to run video capture and encoding software on the same Mac running MegaSeg, and use a free 3rd party app called CamTwist which captures MegaSeg’s video window and sends it to the encoding software as a virtual video device (or use CamTwist Studio’s built-in stream encoding feature.)

Another popular video capture and stream encoding app that works with MegaSeg is Wirecast from Telestream.

Here’s an example of how to setup CamTwist to connect with a video encoder:

First decide what quality you want the video stream to be. In this example, we’ll use 640 x 480. Next in MegaSeg’s Video menu, choose “Fixed Size 640x480” and start playing a video. Then move the video window to a corner of the screen (or a virtual desktop “Space” using Mission Control) that you won’t obstruct with other windows.

Now Open CamTwist and follow these steps:
Step 1: Select Desktop
Step 2: none
Step 3: Select Desktop
CamTwist Settings:
Select Screen: This screen (or the desktop/space you placed the MegaSeg video widow)
Click Resizable Selection.
Place box around MegaSeg’s window. If you want a 16:9 feed, select the letterbox area within the 640x480 video window size.

Optional: Use Full Screen video with the Mac’s video resolution set to a lower setting you wish to capture at. For example 1280x720. Set CamTwist to capture the entire screen, or a letterbox portion. If you wish to use MegaSeg at the same time, you will need two monitors (two “desktops”). MegaSeg can be set to output video on the 2nd desktop, and CamTwist can be set to capture that 2nd desktop.

Next download Soundflower (free) or Loopback to route MegaSeg’s audio into the video encoder. With Soundflower, open MegaSeg’s Settings > Devices tab and change Playlist Output to “Soundflower (64ch)”. Next open the video encoder and select CamTwist as the video input device, and SoundFlower (64ch) as the audio input device.

Can I specify the time a file (e.g. jingle, ad, promo, or ID) will play?

Absolutely. MegaSeg incorporates powerful Scheduler and Events features. You can create schedules (playlist “Hot Clocks” based on categories/genre) and then use the Events feature to start them at specific times, or insert promos/IDs/jingles/sweepers at certain intervals (every 3 segues, every 15 minutes, 59 past the hour, Tuesdays at 10:30 PM, etc). Please read the built-in User’s Guide in MegaSeg’s Help menu for more detailed information.

Can MegaSeg schedule commercial breaks for radio?

Yes MegaSeg includes a built-in Scheduler and Events system to automate playlists for music rotations, ad “stopsets”, promos, station IDs, etc. The category scheduling system is based on pre-shuffled “rotations” of tracks, so it allows for even rotations. That said, you can control when tracks in each category stack are reshuffled. The default is “Every 1 Rotation”, meaning all tracks play once before reshuffling. This is set in Settings > Scheduler > Category Settings.

Note that when Rules (Artist, Track & Album Separation, etc.) are enabled and set to Automatic you need to select the categories MegaSeg should ignore to prevent issues with scheduling non-music tracks (Ads, IDs, Promos, Voice-tracks, etc.) This is set in the Rules tab on the bottom right “Ignore Categories” box.

MegaSeg’s Events tab also includes the ability to Insert Playlists or Playlist “Schedules” into other Playlists or Schedules. This is how you can insert a commercial break, or tracks from a group of categories, to be scheduled into a more general music-based schedule or playlist.

For example, using the Scheduler, you could build a short 2-minute ad “stopset“ using categories in a specific order like so:

Bumpers      <--e.g. “We’ll be right back after these messages”
Station Promos

...All these categories contain various production elements in them. This Schedule can then be saved as a file named “Stopset A” for example. Then in the Events list you would simply insert this into the main music playlist or schedule via a single event that triggers every hour at a certain time:

:23 past the hour      Insert Playlist: Stopset A

(Of course there are many more trigger types available.)

Once this Event triggers, tracks from Stopset A’s categories will be inserted into the active playlist queue. Once the last inserted track ends, it continues with the original playlist.

Above is just a simple example. You can of course use many more categories to control the rotation speed of your ads. For instance, with two categories such as “Ads60-Fast” and “Ads60-Slow”, depending on how many ads you put in each category, and how often you schedule said categories, you can control how often each ad plays.

Also note you can generate a report of every time a particular ad played using the File > Show History menu command. Then even print this report with File > Print (Command-P) and save as a PDF.

How do I send the current song info to TuneIn.com and other services?

To send metadata to TuneIn, open MegaSeg’s Preferences window and select the Logs tab, then click to enable the “Send To Server” checkbox and then select the "TuneIn" option in version 6 and higher (or “HTTP” and “Get” modes in version 5.9.9 and older).

Next, paste this into the “Server URL” field:


In the above URL, simply replace ID with your TuneIn PartnerID, KEY with your PartnerKey, and SID with your StationID. Note you’ll need to contact TuneIn if you don't have this information.

And that’s pretty much it! However for commercial stations, you might include one extra bit at the end:


...Then tag your commercials in MegaSeg’s Edit window > Additional tab > Record ID field with the text “true”. (Note, you can perform a multi-select edit to assign this tag to all commercials at once.)

To send metadata to other services that accept HTTP Get or Post updates, you can apply the same concepts above, or use some built-in example presets in the popup menus for Shoutcast and Icecast servers, or even upload directly to your website via FTP.

We would like our iTunes library on a separate server. Does the server need MegaSeg installed?

No it’s not required to have MegaSeg installed on the server. All MegaSeg workstations can access the iTunes media files via File Sharing.

However, we do recommend the “server” be the same Mac running MegaSeg in the primary on-air studio. (In other words, the on-air workstation is also the server.) This allows the most critical MegaSeg system to have direct access to media files without needing to be served over a potentially slow or troublesome network. All other systems (production room, program director, etc.) can then access MegaSeg’s library and media files remotely via the “on-air server”.

While there’s no need to use iTunes at all, if you wish to use iTunes for the core media library, you still can with the above approach (i.e. both iTunes and MegaSeg running on the on-air system). The MegaSeg User’s Guide (available in the Help menu when running) has additional information on the network syncing features.

Can MegaSeg interface with a satellite receiver to automate radio programming?

Yes, there are two primary methods to use a satellite receiver with MegaSeg and respond to contact closures for commercials:

  1. Audio play-thru control (i.e. mic play-thru events)
  2. Contact closures and relays (i.e. detect or send Serial Trigger events)

Audio Play-Thru Control

The play-thru control option is the simplest if all you need to do is cut the satellite audio, play commercials, and return. This works by routing the receiver’s audio into the Mac’s audio input (or a 3rd party USB/Firewire audio device) and set MegaSeg’s “Mic Input” to that device. Then in MegaSeg’s Events tab, setup a trigger to turn the “Mic play-thru” off in combo with an event to start the commercials.

For example, here’s an Event List to play a commercial break at :20 past every hour, then return to satellite:

:20 past the hourMic Play-Thru: Off and Stop Playlist
:20 past the hourOpen Playlist: Stopset A
When playlist endsMic Play-Thru: On and Stop Playlist

The “Stopset A” playlist can actually be a Playlist Schedule which includes category rotations of spots, or just a single track. For example, in the Scheduler tab, you can setup “Stopset A” to have this structure:

Bumper IDs
Bumper Promos

The “Bumper IDs” and “Bumper Promos” categories can contain a variety of IDs and Promos that rotate each time the stopset plays.

Note the “Break” track at the end is important to allow the last item to play entirely before the “When playlist ends” event triggers to turn the audio play-thru back on.

Contact Closures & Relays

MegaSeg can interface with various I/O devices using a special event called “Insert Break (serial trigger)” which can be configured to send and/or wait for any serial command string. Using a USB-to-RS232 serial cable, MegaSeg can communicate with any RS-232 compatible device.

If your satellite receiver has a built-in RS-232 port, it may be possible to directly control it instead of using a relay box by configuring the text strings MegaSeg sends or receives. Otherwise, we have configured the default settings to work with the SRC-2 from Broadcast Tools, a two relay and contact closer box for about $150. (Scroll to the middle of the list.)

Here’s an Events List example:

When playlist endsInsert Break SerialInterrupt Checked
When playlist endsOpen Playlist: Stopset A

In the Insert Break Serial event dialog, there will be options to set the serial port baud, bits, etc, as well as a “Send on Break” text string (the data it sends to the RS-232 device to trigger a relay). The last block is what is it listens for to continue (the data it receives from the SRC-2 on closure, and then advances past the “break track”). Note we have it set by default to pulse the relay, and wait for a closure to continue. Also note in this example, you need to include a “Break Track” at the end of the “Stopset A” schedule or playlist.

MegaSeg is also compatible with a HID device called the USB Trigger from Sensorium. This is an input-only device (no relays), and when used in combination with USB Overdrive can be configured to trigger any of MegaSeg’s menu commands or keyboard shortcuts.

Is MegaSeg compliant with music licensing laws?

As far as music licensing goes, MegaSeg is simply a playback tool, similar to a CD player and mixer. Using iTunes, you can transfer your CD’s to your Mac and then import and play them in MegaSeg. Transferring your own CD’s to your hard drive is like making a backup copy of a software program. If you get rid of your original CD, you are required to delete the backup copy.

Another example is when you make a mix of your favorite songs from the music you own to play in the car. It’s a compilation for your own use, and just the same, the sound files purchased online or extracted from your CD’s is playing or mixing the music you own.

However, when it comes to public performance rights, each individual venue or station you perform at should be ASCAP and BMI licensed, which would cover the music you play from their respective catalogs. Some streaming providers also handle licensing via an “umbrella” plan, meaning all broadcasters that use their service are automatically licensed, as long as you follow their rules and terms of service.

› Controllers / Remotes / Interfaces
What MIDI controllers work with MegaSeg?

MegaSeg includes many presets already setup for many popular controllers, and all MIDI controllers can interface with MegaSeg using the MIDI Learn Mode. Simply choose “New Preset”, select a relevant function in the control list, press the button or knob on the controller to connect it, and toggle out of the Learn Mode to try it out. If you make a preset for a new controller, or need any help doing so, please let us know.

Are there wireless remotes I can use to control MegaSeg?

Yes, there are various options available including RF (radio) and IR (infra‐red) remotes listed on our Controllers page. MegaSeg is compatible with any remote that sends “media key” commands, as well as “Keynote Shortcuts” (enable this mode by selecting the "Use Keynote Shortcuts" command in the Playback menu.) MegaSeg also works with the Apple Remote that comes with some Macs, the Apple TV, or available separately.

What features does the Apple Remote provide within MegaSeg?

The Apple Remote’s center button segues into the next track; Play/Pause pauses the track with an optional spin-down effect. Holding Play/Pause down for one second will stop the current track and playlist. The + and - buttons adjusts the volume. The FF/REW buttons adjusts the Cue Position so you can repeat or skip tracks in your playlist queue. Holding down FF/REW buttons fast forwards or rewinds the current track. The Menu button toggles Auto mode for continuous playback.

Note you must launch iTunes before MegaSeg in order for the remote to function correctly with MegaSeg (you can quit iTunes once you’ve launched MegaSeg).

Center button = Segue to next song
Play/Pause = Pause with optional “spin down” effect (option in the General tab)
Play Held Down = Stop Track and Playlist
Left/Right = Playlist Cue Position
Left/Right Held Down = FF/REW current track
Up/Down = Volume
Menu = Toggles Auto on/off

Note: Launch iTunes prior to MegaSeg for a proper ‘lock’ on remote.

How can I stop iTunes from launching and playing when using the Apple Remote with MegaSeg?

For MegaSeg to gain an “exclusive lock” on the remote, iTunes must be open prior to launching MegaSeg. Apple changed something along the way that causes the request for exclusive mode to not be respected unless iTunes is already open. Once iTunes and MegaSeg are launched in that order, you can quit iTunes, and it won’t auto-launch again while using the remote with MegaSeg.

Can I control MegaSeg over the internet from another system?

Yes! There are several options available for remote access of MegaSeg and your Mac. Some popular options include:

  • Apple’s own “Back to My Mac” feature that is free and part of iCloud and Mountain Lion (OS X 10.8). This is enabled in the System Preferences > iCloud.
  • Using the Mac’s Screen Sharing feature (available in all versions of macOS via System Preferences > Sharing > Screen Sharing checkbox) — This requires setting up your router’s port forwarding to access outside of your LAN, unlike “Back to My Mac”). This option is also compatible with various free VNC clients on all platforms (Mac, PC, etc.)
  • Using Apple’s Remote Management feature (available in all versions of macOS via System Preferences > Sharing > Remote Management checkbox) which works with Apple’s “Remote Desktop” app. However this is generally overkill for basic access (it’s designed to administer a classroom of Macs, a computer lab, or large company.)
  • Various 3rd party screen share services that work without router configuration (like Apple’s “Back to My Mac” above), including LogMeIn.com, TeamViewer.com, and GoToMyPC.com
  • Air Display is a great app that turns your iPad into a wireless touch-screen monitor for MegaSeg via WiFi.
› Video Outputs / Playback
Will videos purchased from iTunes work with MegaSeg?
Download Music Videos on iTunes Now

Yes all newly purchased iTunes music videos will play in MegaSeg. However while MegaSeg has been able to play older DRM copy-protected audio files, older music videos purchased prior to 2009 will not play. Apple has since removed all DRM copy‐protection from iTunes Store purchased audio and music video content in 2009.

If you have previously purchased a protected music video, Apple gives you a possible way to upgrade it to a DRM‐free version via their iTunes Match service (if the link doesn't work for you it's at the bottom of the main iTunes Store screen), which for a low flat rate will upgrade everything in your library to new DRM-free copies, including any tracks you may ripped yourself from CD at a lower quality (up to 100,000 tracks).

Again, while it may not be necessary to upgrade your older protected tracks that play in MegaSeg, the newer format will double the bit rate to 256 kbps, increasing the audio quality substantially.

How do I get my DVD music videos into MegaSeg?

There are several programs to convert DVD music videos for playback in MegaSeg. A free program called Handbrake does both DVD extraction and encoding into MPEG‐4 (mp4) format. Another free program called MPEG StreamClip can convert extracted VOB files from DVD into either an MPEG‐4 or a QuickTime movie. There are also some commercial apps for both extracting and converting DVDs with more options. These include RipIt and DVDxDV.

What are the best video settings? How do I output videos without showing on the Mac’s screen?

First open the Mac’s System Preferences from the Apple menu, click on Displays, and uncheck the Mirroring option. This will give you two discrete desktops, the main desktop with the menu bar on your Mac’s screen, and another secondary desktop that can be used for MegaSeg’s video playback. Note, you can also turn the Mirroring option on and off from the menu bar if you enable the “Show Displays in Menu Bar” option.

Next, if you are running OS X 10.9+ you will need to disable the showing of the Menu Bar across the top of every screen (including the video output). You can do this in the System Preferences under the Mission Control settings, hidden away oddly as an option called "Displays have separate Spaces", instead of being located in the Displays preferences as you might expect. (Apple may change this in future macOS updates.)

Back in MegaSeg, when you select the Video menu’s Full Screen menu option (“letterbox” mode recommended), MegaSeg will automatically detect if you have a 2nd display connected and show the video full screen on that display (or video output). If you have more than two video screens connected, you can select the screen by setting MegaSeg’s Video window to Normal Size, and drag the video window to the display, and then select the Full Screen video option.

The video resolution of the 2nd display (video projector, HD monitor, etc.) can be adjusted using the settings that appear directly on that display when the Mac’s System Preferences > Displays settings are open. If you can’t see the 2nd monitor to make adjustments, there is a button on your main screen’s display settings called “Gather Windows” that will move the 2nd display’s settings window to your main screen.

If you are running MegaSeg 5.x or older, we recommend the resolution setting for the 2nd display be set to 1280x720 (aka 720p) resolution maximum (for 16:9 wide screens) or 1024x768 (for 4:3 screens), as well as use the default “letterbox” Full Screen option in MegaSeg’s Video menu for best results and performance. MegaSeg 6 has optimized video playback and upscaling, so any resolution setting should be fine.

On macOS 10.9+ how do I hide the menu bar from showing on my video output?

Newer versions of macOS added better support for multiple displays by allowing all Mission Control “Spaces” to be accessible from every display. However this also puts a menu bar across the top of all displays. In order to resolve this, open the System Preferences from the Apple menu, then under the Mission Control settings, uncheck the "Displays have separate Spaces" option, and you’re good to go!

Also be sure to read our other video output setting recommendations.

› Audio Outputs / Recording
Can I use AirPlay with Apple’s Airport Express or AppleTV for remote speakers or preview?

Yes! In OS X 10.8+ there’s an “AirPlay” output device you can select in MegaSeg’s Device settings for preview or main playlist output. For older Mac systems, you can use a program called AirFoil from Rogue Amoeba, to send MegaSeg’s audio to any AirPlay compatible device, such as the Airport Express.

How do I hook my Mac into an amp or PA?

You’ll need to pick up an “1/8 inch stereo to RCA audio cable” from your local stereo store. If you experience a hum or buzz in the audio, Radio Shack sells an audio cable “ground loop isolator” which help eliminate the hum caused by pesky ground loops. You should only need this if you hear a hum or buzz using a standard cable.

Also check out this Apple tech note on how to solve ground loop problems.

How do I use my headphones for cue?

You’ll need to use a second sound output, such as the inexpensive Griffin USB audio adaptor. MegaSeg has two ways of using the second output for cue and preview...

  1. Using one output as “Program” and the other output as “Cue”. Either the built‐in output or the iMic can be used as the main “Program” output; use the other output for your headphones. This method works great for basic Previewing and Cueing, and is the default setting.
  2. Select MegaSeg’s “Discrete Output Mode” in the Output Settings window (in Preferences) to use both outputs as “Program” channels via an external mixer. This is like having two CD Players or turntables. A track stays on one sound output throughout the duration of the track. This mode works great for beat mixing.

Read more about Audio Outputs...

How do I record audio from MegaSeg?

There are several options to record MegaSeg’s audio playback. One option is to use a utility such as Soundflower (free) or Loopback, both which creates a "virtual audio device" that can route MegaSeg’s audio into any recording app, such as Apple’s GarageBand, Logic, or QuickTime Player. For example, you will see a new audio device option appear in MegaSeg’s Preferences > Devices > Playlist Output setting, as well as in the input device options of the recording app. Select this new "virtual device" in both apps, and it creates a direct digital connection between the two.

Another option is to record MegaSeg’s audio (and optionally all system audio) using various utility apps that are designed to capture audio directly from MegaSeg to an audio file. Some example apps are:

These apps have options to record directly from any app into various audio file formats, and some such as Audio Hijack also supports built-in effects and plugins (dynamic compression and EQ processing for example.) Some apps even support recording the entire system’s audio rather than individual apps.

› Technical / Library / Metadata
How do I backup my Mac & MegaSeg?
WD Passport icon The WD 4TB Passport external drive is a perfect backup option with excellent speed and plenty of room for either incremental Time Machine backups and synced mirror copies.

The best way is to get an external hard drive and use the Time Machine backup feature already included with your Mac. Just plug in the drive and select it in the Time Machine settings in your System Preferences. After Time Machine has finished the initial backup, it will copy any new or modified files automatically every hour (or each time you connect the drive).

There are a few good alternative solutions that work in a similar way to Time Machine that gives you even more control or features. ChronoSync and Resilio Sync apps can select exactly which folders you want to keep backed up. These options are useful if you’re tight on external drive space, or want to keep a “mirror copy” of your main drive rather than a Time Machine archive or snapshot-style backup. ChronoSync and Resilio Sync can be set to backup the entire system, just your home folder, or a set of specific folders, with the ability to only copy new or modified files. (There’s also a Terminal command line option we’ll cover more below.)

If you have two or more Macs you want to keep in sync for a “hot backup”, you can use the ChronoSync and Resilio Sync apps described above to handle the syncing of files between them directly. You can connect any two Macs together using a FireWire cable (for fastest speed), and restart one of the systems. When you hear the startup chime, hold down the “T” key which will enable Target Disk Mode. This allows the Mac’s internal drive to be used as a virtual external FireWire drive for the other Mac it’s connected to. You will then see the drive appear on the desktop as an external FireWire drive. Then just use your sync app to update the entire volume, or specific music folders as described above.

Finally, if you want to geek out, there’s a Terminal command that can sync between drives (or remote servers) called ‘rsync’. This MacLife rsync tutorial gives a good overview of common usage.

Can MegaSeg play tracks from the iTunes Store or Apple Music?
Top songs on Apple iTunes

Historically MegaSeg has long had the ability to play songs and music videos purchased via Apple’s iTunes Music Store, including older DRM "Protected" .m4p audio purchased between 2003-2009, as well as newer tracks downloaded from the Apple Music subscription service.

macOS High Sierra and iTunes 12.7.2 caveat

A recent issue in High Sierra and iTunes 12.7.2 has now hampered full support of "Protected" DRM .m4p files, such as those used by the “Apple Music” monthly subscription service. We have released MegaSeg 6.0.5 which includes a workaround to facilitate limited playback support, and reported this issue to Apple so they can hopefully resolve the core issue in a future system update.

However, if you find the workaround for limited playback support in MegaSeg 6.0.5 too restrictive, and need full functionality while playing DRM Protected .m4p files, you’ll need to stay on (or downgrade to) Sierra 10.12 and iTunes 12.7.1 or older, until Apple fixes the core issue in a future macOS or iTunes update. It’s possible to downgrade your Mac either via a Time Machine backup, or create a separate Sierra boot drive or partition to reinstall Sierra 10.12. There is a comprehensive MacWorld article that details various options and steps to complete the downgrade. If you are already on Sierra 10.12, you may still need to perform a clean install of Sierra 10.12 to reverse the problem, but you might first try downgrading to an older iTunes as a first step. Apple has provided a support article that includes a link to download iTunes 12.6.3.

Can MegaSeg play MP3, MP4, AAC, FLAC, Ogg, WMA, Flash, DivX, MPEG-2, AVI, and other files?

Yes, MegaSeg supports all popular formats natively including MP3, MP4 (MPEG-4), AAC, Apple Lossless, AIFF, WAV, and anything QuickTime can play. Plus with free plug-ins available, MegaSeg can support many additional formats...

First up is Perian which adds support for various codecs including DivX, 3ivX, FLV1, FSV1, VP6, VP3, HuffYUV, ffvhuff, MPEG‐2, FRAPS, Windows Media Audio v1 & v2, Flash ADPCM, Xiph Vorbis, libavformat, AVI, FLV, MKV, and AC3 audio. (Note while Perian is no longer updated, it still works great.)

Next is XiphQT which adds support for FLAC and Vorbis audio (Perian supports Ogg Vorbis as well). However to support .flac files (rather than just .ogg containers), you’ll also need to download the FLAC Importer, and move the "FLACImport.component" file into the same /Library/Components/ folder as the XiphQT component file. (Note while the instructions mentions the /Library/QuickTime/ folder, we found the /Library/Components/ folder works fine.)

For Windows Media (.wmv and .wma files) support, check out Flip4Mac.

How can I update the MegaSeg library when I change a track’s metadata in iTunes?

Make sure you are viewing all songs you want to update in the Library view (selecting “All Categories” will display all songs imported), then go to File > Library Tools > Import ID3/AAC Tags. Then select the fields you wish to update and click Process. This will take several minutes depending on the size of your library. (Note the ‘time’ field takes the longest to process, as is unchecked by default.)

What is the best method to import new tracks from iTunes?

MegaSeg offers multiple methods to import tracks from iTunes, including scanning the iTunes Library database, searching iTunes’ media folder, opening an iTunes Playlist, or dragging tracks directly from iTunes into MegaSeg’s window or dock icon.

If you have iTunes version 12.2 or higher, we recommend enabling a new “share library XML” option in the iTunes Preferences:

➊ Open iTunes Preferences
➋ Click the Advanced tab
➌ Check the ‘Share iTunes Library XML...’ checkbox
➍ Click OK to close the window

iTunes XML Preference

How do I transfer MegaSeg to a new Mac, with proper categories, playlists, and info?

There are two basic methods to accomplish this; Manually copy files, or use an automated tool such as Apple’s Migration Assistant. We’ll cover both methods below.

The TL/DR version...

(But check out the full article for additional info and tips!)

Option 1:

Consider using Apple’s Migration Assistant to perform the transfer. But before you start, on the original Mac open MegaSeg and select the File menu > Library Tools > Scan for Missing Files command. Click "List All" if a missing file dialog appears. Quit MegaSeg and complete the Migration Assistant steps. Once complete, open MegaSeg on the new system and select the File menu > Library Tools > Scan for Missing Files command to ensure everything checks out. You’re Done!

Option 2:

Manually copy files by following these steps:

  1. On the original Mac, open MegaSeg and select the File menu > Library Tools > Scan for Missing Files command. Click "List All" if a missing file dialog appears. (You can run it again and click "Remove All" if you wish to clear out any missing files before the transfer.)
  2. Now Quit MegaSeg and copy the app file (or download a fresh copy via our Recovery System) to your new Mac. Do not open it yet on the new Mac.
  3. Copy MegaSeg’s data folder, located at ~/Music/MegaSeg/ to the exact same location on the new Mac. (Also check to see if you have an older version data folder at ~/Documents/MegaSeg User Data/ If so, copy it to the Documents folder on the new Mac.)
  4. Copy the iTunes folder, located at ~/Music/iTunes/ to the exact same location on the new Mac.
  5. Copy any other media folders you’ve imported into MegaSeg to the same location on the new Mac. (Tip: To see what folders outside of iTunes you’ve imported, select MegaSeg’s File menu > Remove Folders command, which displays a tree-view of imported folders.)
  6. On the new Mac, do not launch iTunes first. Open MegaSeg and select the File menu > Library Tools > Scan for Missing Files command. It should report "No Missing Files", or give you the same list of missing files as on the old system.

👍 Now read the full article below for additional info and tips!

Before You Start

On your older system, run MegaSeg’s Scan for Missing Files command (File menu > Library Tools > Scan For Missing Files) and if one appears, click "List All" to see a full report. (This scan ensures MegaSeg is current prior to migrating.) Next make sure MegaSeg is not running on both systems.

Determining The Transfer Mechanism


Connect two Macs via a FireWire or Thunderbolt cable, and use "Target Disk Mode" to access the Mac’s drive directly. Once the cable is connected, restart the old Mac and hold down the “T” key until you see a special FireWire or Thunderbolt logo appear. This mode turns the old Mac into an external hard drive, and should now appear on your new Mac’s desktop. (You may need to open a new Finder window to browse for it.)


For Macs with an Ethernet port (or special Ethernet adapter), connect an Ethernet cable between both Macs and turn on File Sharing in the System Preferences on either Mac. You can then login and copy files over the network. A slower alternative to using an Ethernet cable is to connect via WiFi. However rather than connect though your WiFi router, create a "computer-to-computer" WiFi network for a stronger signal and faster speed.

WD Passport icon The WD 4TB Passport external drive is a perfect backup option with excellent speed and plenty of room for either incremental Time Machine backups and synced mirror copies.

Slowest (or fastest if already backed up!)

Use an external hard drive to transfer files. This method is typically slowest, unless you already have a Time Machine backup handy, as it requires copying files twice (both to and from the transfer drive), although it leaves you with a handy external backup, which is always a good thing! If you use Apple’s Time Machine to backup your Mac, simply make sure you’ve recently backed up and use it to "restore" into your new Mac using the Migration Assistant or Recovery Mode.

The Automatic Method

To assist in the actual copying of files, you can use Apple’s “Migration Assistant” application to handle everything automatically. The Migration Assistant is located in the Applications folder inside the Utilities folder, but you are also asked if you want to use this when first booting a new Mac. This is highly recommended when you get a new Mac to ensure all your stuff is moved correctly — It’s like performing a complete brain transplant.

The Migration Assistant will walk you through the step to connect the Macs together (use the above mentioned Target Disk Mode or Ethernet for best speeds), and take care of copying over your home folder, including the Music folder where MegaSeg stores its database, and iTunes stores its media files, as well as your applications, documents, emails, settings, and other important data.

Because the Migration Assistant moves an entire home folder account (and does not support merging into an existing account) it’s best to use this when a Mac is fresh from the box, as otherwise you will end up with two user accounts. You could delete the unwanted account and start using the freshly migrated one, but you may decide it’s best to use the manual method below and copy only the things you need.

The Manual Method

Option 1: Copy all media and data folders.

Generally, if you copy the entire contents of your Music folder to the Music folder on the new Mac, you’ll be good to go. More specifically, MegaSeg’s library, playlists, logs, etc. are stored inside the "MegaSeg" folder inside your Music folder (located at ~/Music/MegaSeg/). Move this folder to your new Mac at the same location (inside the ~/Music/ folder). Next, for most users, the actual media files MegaSeg plays are inside the ~/Music/iTunes/ folder, and again copy that to the same location on your new Mac.

Next you should check to see if you may have imported files from other folders (outside of iTunes) or external drives using MegaSeg’s "Folders View". Display this view using the library’s sort menu and select "Folders", or choose the File menu > Remove Folders command. Once the Folders View is displayed, it will show a list of drives you’ve imported from, and you can click the triangles to expand each drive and navigate down the folders to locate anything else you may need to copy over.

Once everything is copied, skip to the Finishing Up section below.

Option 2: Copy playlists only.

If you only want to move a handful of specific playlists over, you can pull the Playlist folder out of MegaSeg’s data folder (or individual playlist files stored inside) and put them in the same Playlist folder location on the new system.

Finishing Up

Start up MegaSeg on the new system, and it should display the same tracks, and you‘ll be able to play everything as long as you put the media files in the same location as on the old system.

Next, it is important to use MegaSeg’s Scan for Missing Files command located in the File menu > Library Tools sub-menu. This scan will ensure MegaSeg has updated paths for all media files. It will also update the File ID tracking codes so if files move around (or iTunes organizes things), MegaSeg will still be able to find everything on the new drive.

If you run into substantial missing files, you may need to use the Remove Folders command in the File menu to clear everything out and reimport fresh. (This normally should not cause the categories or segue times to reset, as all the metadata is stored in both the library and the files as a backup, specifically for a situation where you need to reimport everything.)

Can I have my own music categories or genres?

Yes. MegaSeg allows you to customize your categories. You can even put a song into multiple categories. This is available by clicking the Set button next to the Category field in the Edit Media dialog (or File > Edit Media menu).

How do I use a microphone with MegaSeg?

MegaSeg Pro includes a Mic On/Off button which automatically attenuates the master music volume, and enables software play‐thru from any audio input to the audio output device you select in MegaSeg’s preferences. For example, you could use the built‐in microphone and have MegaSeg send the audio to an external USB audio output, or the built‐in speakers.

Can MegaSeg beat mix between songs?

Yes! MegaSeg has many beat mixing features, including a wave viewer for visual mixing and syncing beats, support for multiple sound outputs for preview and cue, multi-touch trackpad control, as well as full MIDI controller support. In MegaSeg DJ the Mixer is always visible, where in MegaSeg Pro you can optionally hide the Mixer view — Click the Mixer button to the right of the Playlist to toggle the full mixing controls. Read more about output options, as well as examples of MIDI controllers.

What is the maximum number of songs MegaSeg can handle?

There’s no set limit to the library size. MegaSeg will try to handle as many files you throw at it, although there are practical limits depending on your available RAM and drive space.

Can I use an external hard drive or network server for more music?

Yes, with MegaSeg you can import files directly from any external or network drive.

Note when considering an external drive, if going with a non-SSD (i.e. traditional spinning platter) type, we normally recommend the full‐size models (3.5" enclosures) with dedicated power and good ventilation, rather than ultra-thin bus‐powered models; as some compact (non-SSD) drives may not be designed for constant long-term or heavy use, and could overheat easily. Make sure to stress test compact drives for the length of time you’ll typically use it.

For a multi-user radio station setup using MegaSeg Pro (which can network sync the library and playlists between systems, such as the on-air studio, production room, and program director’s office), we generally recommend the on-air system be the primary server for the other MegaSeg systems. This allows the most critical MegaSeg system to have direct access to the media files. All other systems (production room, program director, etc) can then access MegaSeg’s library and media files remotely via the “on-air server”.

Are small “pocket sized” hard drives fast enough for music?

Audio uses a very small amount of bandwidth and most drives will work fine. However, we generally recommend full‐size external drives instead of ultra-thin bus‐powered models, as some compact (non-SSD) drives may not be designed for constant long-term or heavy use, and could overheat easily. Make sure to stress test compact drives for the length of time you’ll typically use it.

Can I “consolidate” my music from multiple drives, or move from an old drive to a new one?

Yes this is possible by putting them in the exact same place on the new drive (maintaining the original path location). MegaSeg will automatically find the files on the new drive without any other prompt or action required, as long as the path has not change besides the drive name.

For example, if two songs are on two drives at the following paths:

Drive One/Fruit/Sweet/Apples/Pink Lady.mp3 Drive Two/Fruit/Tart/Oranges/Blood Orange.mp3

You can move them both to a new drive here:

New Drive/Fruit/Sweet/Apples/Pink Lady.mp3 New Drive/Fruit/Tart/Oranges/Blood Orange.mp3

...And MegaSeg will find everything automatically.

You can even change the path slightly by trimming upper folder levels like so:

New Drive/Apples/Pink Lady.mp3 New Drive/Oranges/Blood Orange.mp3

...Note the Fruit, Sweet, and Tart folders have been removed from the path, yet MegaSeg can still find everything just fine.

However, you can’t change the path by adding or renaming folders, or removing mid-level folders:

New Drive/New Folder/Fruit/Sweet/Apples/Pink Lady.mp3 New Drive/Tart/Renamed Folder/Blood Orange.mp3 New Drive/Fruit/Apples/Pink Lady.mp3

After you complete moving and/or consolidating files into correct paths on a new drive, use the “Scan For Missing Files” command in MegaSeg’s File > Library Tools sub-menu. This will update the paths in the database and confirm everything was found successfully. (While MegaSeg does locate and update file paths on-the-fly, it is highly recommended you perform the full scan after making major changes.)

Once the scan is finished and reports no problems, and if the drive is Mac formatted, you can rename or reorganize folders as desired on that particular drive. This is because MegaSeg will track files and folders on a specific drive using a special File ID that is unique to that drive. Note this file tracking feature only works with Mac formatted drives. You can check your external drive’s format by selecting the drive in the Finder and choose the File menu > Get Info command to ensure it is “Mac OS Extended (Journaled)” format.

If the drive is not Mac formatted, it’s still possible to reorganize or rename folders if you manually edit MegaSeg’s file path info by exporting the library data (using the File menu > Library Tools > Save Library as Text command), and perform a global find-and-replace for the specific path changes using either a text editor or spreadsheet app (such as Apple’s TextEdit or Numbers). Then import the modified library back into MegaSeg using the File menu > Library Tools > Open Library as Text command.

Are the playback setting’s “fade-out time” saved with the song?

The Fade-Out Time is global and defaults to 3 seconds. Each song does have its own custom segue time (or end time), and allows you to override the fade‐out with the “Fade‐out Override” checkbox. You can also use the Voice-Over checkbox (which automatically enables Fade-Out Override) to make a voice track play over the intro of the next song in the playlist (and backtime into the vocal if required).

Can I change the name of audio files without problems?

Yes, MegaSeg keeps track of the files using a special tracking FileID. This means you can move or rename a file on the same drive and MegaSeg will be able to relocate it automatically. MegaSeg also keeps track of the audio files in the database by path and filename. It will check this first, so you can swap out a file easily. If for some reason it can’t locate a file, then MegaSeg will give a missing file error, and allow you to manually find or remove the file.

What is the function of the “Intro Time” field in the Edit window?

Intro Time is used to display a count down timer to the start of the song’s vocal. It’s useful if you talk over the intro of a song (radio style) and keep track of how much time is left before the singing starts.

Is there a way to set a “cold” ending or segue on certain tracks?

Yes. Set the End Time (aka Segue Time) at the exact time of the cold ending. MegaSeg will start the next song at this exact time. MegaSeg’s fade-out of the previous song always starts after the next song starts, so it won’t cut off the cold ending song. (Settings a custom End Time also disables the Auto Trim mode for that track.)

Can MegaSeg print the Library, Playlists, Logs, or Play History graphs?

Yes, MegaSeg has a Print command in the File menu that allows you to print either the currently selected Library, Playlist, Logs, or Play History windows. Just click to select the list and then choose Print from the File menu (or Command-P) and check the fields you want included in the list.

Alternatively, all saved Playlists are text files stored in the Playlists folder. You can print them using a text editor or spreadsheet like Excel or Apple’s Numbers and reformat as necessary. The Library can also be exported as a text file by using the ‘Export Library as Text’ menu command. The tabbed text file can open in a spreadsheet program, such as Numbers or Excel.

How is the database formatted?

The database is conveniently exported as a text file located in the MegaSeg data folder inside your Music folder. This makes it easy to “power edit” using a standard text editor if necessary. You can also export and import the Library as a tab delimited text file to edit using a spreadsheet such as Numbers or Excel using the File > Library Tools menu.

Does MegaSeg install any files into my system?

No, MegaSeg is completely self-contained and utilizes built-in macOS libraries and APIs such as Core Audio and QuickTime. In fact, the only files MegaSeg saves is for its Library, Playlists, Logs, etc. (within ~/Music/MegaSeg/).

› Troubleshooting
How do I solve an iTunes authorization message to play purchased music?

There are a few possible solutions to this issue. First, try the Deauthorize and Reauthorize commands under the Account > Authorizations menu inside iTunes. Then once reauthorized, reboot your Mac.

If reauthorizing doesn't help, try installing the macOS upgrade El Capitan 10.11 or Sierra 10.12 which are both known to resolve authorization issues on older versions of Mac OS X.

macOS High Sierra and iTunes 12.7.2 caveat

A recent issue in High Sierra and iTunes 12.7.2 has now hampered full support of "Protected" DRM .m4p files, such as those used by the “Apple Music” monthly subscription service. We have released MegaSeg 6.0.5 which includes a workaround to facilitate limited playback support, and reported this issue to Apple so they can hopefully resolve the core issue in a future system update.

However, if you find the workaround for limited playback support in MegaSeg 6.0.5 too restrictive, and need full functionality while playing DRM Protected .m4p files, you’ll need to stay on (or downgrade to) Sierra 10.12 and iTunes 12.7.1 or older, until Apple fixes the core issue in a future macOS or iTunes update. It’s possible to downgrade your Mac either via a Time Machine backup, or create a separate Sierra boot drive or partition to reinstall Sierra 10.12. There is a comprehensive MacWorld article that details various options and steps to complete the downgrade. If you are already on Sierra 10.12, you may still need to perform a clean install of Sierra 10.12 to reverse the problem, but you might first try downgrading to an older iTunes as a first step. Apple has provided a support article that includes a link to download iTunes 12.6.3.

Another unusual authorization issue to watch out for is having two or more accounts for purchased iTunes music. For example if you used a different iTunes account years ago, you’ll need to authorize that account as well, even though you’re no longer actively using it. (You can authorize your Mac for multiple iTunes accounts.) To check which account was used to purchase a track, select the song in iTunes and choose the File menu’s “Get Info” command, and the account name will appear under the Summary tab. (Note while your Mac can be authorized for multiple accounts, each account can only authorize 5 Macs simultaneously.)

iTunes Match

Finally, as all individual songs and albums purchased from the iTunes Store today are no longer DRM copy‐protected (as of 2009), it’s possible to upgrade your older (pre-2009) purchased music to the DRM-free format for a small fee using the iTunes Match service (if the link doesn't work for you it's at the bottom of the main iTunes Store screen). Apple will replace your entire library with fresh DRM-free copies of everything in your library, including tracks you may have ripped from CD (up to 100,000 tracks).

Tracks in my Library are linked to the wrong files. How do I clear my Library and reimport?

MegaSeg keeps track of files using macOS Alias technology. This means that even if a file is renamed or moved on the drive, MegaSeg will still be able to find and play it. However if you swap hard drives, or transfer your files to an external drive, it’s a rare possibility for it to get confused and cross‐link to random files, if they’re moved or renamed on the new drive before MegaSeg gets a chance to re-index them at their new location. A simple solution is reimporting the files fresh. Note all your database info will remain intact, since MegaSeg tags each file with its custom metadata.

Here’s how to clear out your library and reimport:

  1. First it’s a good idea to backup your current database, just in case you want to revert back to it. Open MegaSeg’s Preferences, and click on the General tab. There note the path to the MegaSeg data folder. Typically this is ~/Music/MegaSeg/
  2. Find that folder on your drive with the Finder. Select the folder, and select Duplicate from the File menu. This create a backup of your current library and playlists.
  3. Return to MegaSeg, and select Remove Folders from the File menu. This shows a window with the names of all the hard drives that have files and folders imported into MegaSeg. Select the first hard drive listed, and press the Delete key on your keyboard. Continue to remove all hard drives listed until this list is empty. Note, this only tells MegaSeg to remove the files from MegaSeg library... It does not delete or trash the files and folders themselves.
  4. You should now have an empty library. Select the Import button, and then the Options dialog on the lower right corner of the dialog. Make sure the Use MegaSeg Tags option is checked, and click OK.
  5. Click the Import button, then the Import Folder button and navigate to your main music folder, and select that folder to import. MegaSeg should bring everything back into the library with all the proper info. Repeat this last step for any other media folders on other drives you may have.

You should now have a fresh re‐linked library. This will solve the problem of cross‐linked files or “Play Error -1”.

What is Auto Trim? Why are tracks ending early?

New in MegaSeg 6.0, Auto Trim setting is now the range of time at the end of a track where MegaSeg starts to listen for the best segue point, and no longer a “hard-and-fast” trim time. (As before, Auto Trim mode is only in affect for tracks that don’t have a specific user-set end time.)

In MegaSeg 5 and older, the “Auto Trim” feature will subtract time from the end of a track that has not had a custom end time (aka “Segue Time”) set. The default Trim time is 7 seconds, which can be adjusted in the Playback tab in the preferences. The Auto Trim feature is useful to “catch” songs that have not been set to a specific (i.e. perfect) segue time.

Note, MegaSeg 3 and higher does not enable the Auto Trim feature for tracks under 95 seconds in duration (for example commercials and jingles) to prevent cutting off those elements by default. Manually trim these tracks as needed using the Edit dialog’s End Time setting.

Why do mono files have no sound or play out of the wrong channel?

This is most likely an issue with how your audio output device is configured for surround sound channels. By default if you are using a sound output device that supports multiple channels, it may send mono tracks to the 3rd output connection it assumes is used for a 5.1 surround sound “center speaker”. This is very easy to change using Apple’s Audio MIDI Setup app, which allows you to define the speaker arrangement for any sound output device...

  1. Open Audio MIDI Setup (found in your Applications > Utilities folder)
  2. Click on the Audio Devices tab.
  3. Select the output device you use for playback
  4. Click the Configure Speakers button
  5. Click on the Multichannel tab
  6. In the pop‐up menu to the right, select “Quadraphonic” or other geometric configuration (depending on the number of stereo pairs on the device).
How do I solve a restart message that appears in several languages?

This restart message is known as a “Kernel Panic”, and generally means something went wrong deep within the OS or hardware. One common cause is a bad or failing RAM chip. If you installed additional RAM recently, it could be that it does not conform to Apple’s specs, or just a flaky module. Some brands may be temperamental in your model of Mac. If you have two RAM slots filled, try removing one and running for a while to see if the problem goes away. If not, swap the RAM chips and try using only the other one for a while to help narrow the problem down.

Another likely cause is the Mac system file becoming corrupt on disk. This can be solved by reinstalling the OS from a Recovery Boot, the original discs, or sometimes just doing a system update (using Software Update in your Apple menu).

Finally a there could be a driver conflict for some 3rd party hardware you have added. If you’ve installed a piece of hardware that requires a driver of some sort, try uninstalling or downloading a newer version.

You can also try some of the troubleshooting options in our larger overall checklist, for example running Disk Utility to repair the disk, resetting the PRAM, and booting in Safe Mode (by holding the Shift key down during startup) which also repairs permissions.

Do you have a checklist to troubleshoot issues or improve system performance?

Yes, below is our checklist. There are various things that could affect performance or cause system issues, for example disk corruption, software and hardware conflicts, swap file fragmentation, or “run‐a‐way” processes. The good news is Macs rarely suffer from these issues. However if a problem does arise, here’s a list of things to troubleshoot:

  1. Startup in Safe Mode

    There’s a special startup mode called “Safe Boot” which performs several housekeeping tasks such as repairing permissions and disabling system extensions for diagnosis purposes. This may help resolve or pinpoint a possible conflict or low-level system issue. To perform a Safe Boot, restart the Mac and hold down the Shift key when you hear the startup chime. You will see "Safe Boot" appear on the upper right if successfully enabled. Once you’ve logged into your desktop, and completed any optional experiments, be sure to reboot normally to re-enable all system functions (such as hardware accelerated graphics.) For more info, please read Apple’s Safe Boot support article.

  2. Verify and Repair Disks

    Run Apple’s Disk Utility app found in the Utilities folder inside your Application folder. This program can verify and repair your drive’s directory and data. If any of your drives need to be repaired due to disk corruption, it could be causing various system errors or issues. If Disk Utility reports you need to repair the startup disk, you’ll need to boot into “Recovery Mode” by holding down the "Command" and "R" keys during the startup chime, then run Disk Utility again from the recovery options. (Note OS X 10.6 and older requires booting from the install DVD and select Disk Utility from the menu.) If Disk Utility reports it can not repair a disk, the disk corruption is beyond what it can handle, and we recommend using a stronger utility called DiskWarrior in that situation.

    Note in OS X 10.11 and higher, the "Repair Disk Permissions" function has been removed and now runs automatically when you perform a Safe Boot as explained under the "Startup in Safe Mode" section above.

  3. Check For Updates

    Sometimes a fresh system update and the optimizations that are performed after installing can clear up an issue. In OS X 10.7 and higher, all system updates appear in the Mac App Store’s Updates tab. (For older systems use the Software Update command in the Apple menu.) Then make sure you have the latest version of MegaSeg installed by selecting the “Check For Updates” command in MegaSeg’s Help menu.

    Also consider upgrading to OS X El Capitan 10.11 or macOS Sierra 10.12 if running version 10.10 or older.

  4. Reset the NVRAM or PRAM

    Sometimes the Mac’s Parameter RAM (aka PRAM or NVRAM) becomes corrupt or may cause sluggish behavior, especially after installing a system upgrade. If you notice scrolling or screen redraws seems slower, this may solve the problem. To reset the PRAM, restart your Mac and when you hear the startup chime, press and hold down the keys Option, Command, P and R until you hear the startup chime a 2nd time. Note the PRAM will reset some of your System Preferences, such as display brightness, resolution, refresh rate, startup disk choice, and speaker volume.

  5. Reset the SMC

    The Mac’s System Management Controller (SMC) is responsible for many low-level functions, and if you are experiencing unusual performance or video issues, it is recommend to try resetting the SMC. To do this, it requires different steps for various Mac models. Please refer to Apple’s SMC support article for more information.

  6. Run Apple Diagnostics

    The Apple Diagnostics startup mode will check your hardware for specific issues such as a memory test, power adaptor, WiFi, hard drive, and other subsystems. See Apple’s full instructions on how to get started with Apple Diagnostics. Note if your Mac is from June 2013 or older, you need to use the Apple Hardware Test steps instead.

  7. Check Internal Drive Space

    If your internal boot drive is running low on space, it can cause system performance issues. It is generally best to have at least 2 GBs free on your drive. To check, select the Apple menu’s About This Mac command and click the Storage tab (or select your boot volume in the Finder and choose Get Info from the File menu.)

  8. Cold Boot The System

    When you fully power-down your Mac via the “Shut Down” menu command (not just the Restart option), it will allow the RAM and swap files to clear and reset. Sometimes this fresh start is all it takes after a system has been running for weeks or months on end, and only going to sleep between each use.

  9. Disable Unnecessary Sharing Services

    In System Preferences click the Sharing icon. Under the Services tab, try turning off any services you do not absolutely need to be active. Sometimes these services will use extra processing power and can cause system delays depending on network status. Printer Sharing and Internet Sharing can be culprits, for example.

  10. Experiment with WiFi and Bluetooth Turned Off

    Try turning the Mac’s WiFi (AirPort) off in the System Preferences under Network to help troubleshoot if the problem is network related. (If the problem goes away, see other network items below.) If you don’t require Bluetooth, you can also disable this in the System Preference’s Bluetooth icon. (You may want to at least disable the “Discoverable” option even if you use a Bluetooth keyboard or mouse that’s already paired.)

  11. Run Periodic Tasks Via Terminal

    There are special maintenance tasks which macOS runs overnight to improve performance. If your Mac is not awake at that time, the maintenance tasks may not run. However you can force these tasks to run manually via the Terminal utility (found in your Applications folder inside the Utilities sub‐folder).

    When you run it and get a command prompt, enter the command:

    sudo periodic daily weekly monthly

    Press Return and it will then ask for your administration password. (Note there is no visual feedback while you type the password.) Once you enter your password and press Return, the cursor will drop to the next line and it will take several minutes for it to finish (possibly up to a half‐hour). There is no progress bar or other feedback displayed while its processing, so you’ll just have to wait for the command prompt to appear again to know it’s finished.

  12. Check For Rogue Processes

    Open the Activity Monitor application found in your Utilities folder, inside the Applications folder. Once open, make sure the pop‐up menu above shows “All Processes” (the default is set to “My Processes”). You can now see every process running on the system, including many hidden ones used by the Mac OS and the core UNIX OS. Click the “% CPU” column header until the list is sorted from highest to lowest processor usage. Note if you see any apps that are taking up too much processor time for too long. If you see a process that is using 80–100% of the processor, it could be a run‐a‐way process. An example of this would be a printer driver that is not compatibility with the OS version or has a bug. There was a case of this happening a few years ago to a certain brand of printer. Try “googling” the name of the process to find out more about what it is and if anyone else has reported the same problem. (Be sure to include “Mac” in the search.)

  13. Remove Login Items

    In the System Preferences, click Accounts. Select the account you use on the left column, then click Login Items from the tabs. Check to see what apps (some may be invisible processes) you have checked to automatically launch when you startup. Some 3rd party software may install “Agent”, “Helper”, or “Daemon” software that runs in the background. One of these may be incompatible with your current OS version, or cause slowdown issues if your network connection degrades. You can test by selecting them and pressing the minus button (or Delete key) and restarting. Note the checkbox does not disable them, you must remove it from the list — The checkbox simply sets the app to be hidden. The only common item should be Apple’s “iTunes Helper” which launches iTunes when you connect an “iDevice”.

  14. Check For Excessive Console Errors

    The Mac logs errors that happen in a “system.log” file you can easily inspect with the Console utility. Startup the Console inside the Applications/Utilites/ folder and it will show the most recent activity. While it often looks chaotic and cryptic, most of what is listed is not a problem. What you should look for is error messages that repeat over and over (for example every 10 seconds), or clues that appear during the problem in question. You can then search online for info about what is displayed.

  15. Repair the ACL (access control list)

    Similar to repairing disk permissions is resetting the ACL which is another type of file permission system in macOS. Sometimes messing with the standard Ownership & Permissions settings of certain home directory folders can cause conflicts, and you may need to repair the ACLs using the Mac’s “Recovery” feature. Just reboot and hold down Command-R to get a special Repair Utilities menu. From there click the Utilities menu up top, and choose Terminal. In the Terminal, type “resetpassword” and press Return. Instead of resetting your password, click the icon for your Mac’s hard drive at the top, and then in the popup menu below it, select your home folder account. Click the Reset button next to the “Reset Home Directory Permissions and ACLs” section below. This will only take a few seconds and should clear up all ACL related issues.

  16. Keep Your MacBook Cool

    If you notice problems start after a few hours of constant use, it may be an overheat issue with the internal drive or processor. This is especially possible if you have a 7200 RPM drive installed which runs hotter than typical 5400 RPM drives. Try propping up the laptop so there’s airflow underneath and a small fan to assist in cooling. You might also try a special laptop cooling pad.

  17. Try Switching USB Ports

    When using external USB audio devices, you may find some USB ports perform better than others depending on your Mac model. For example, on some older MacBooks the right side USB port was slower than the left. Switching ports can also help determine if one port has a faulty or intermittent connection.

  18. Uninstall Conflicting Backup Software

    The Mac includes a great backup system called “Time Machine” that works with any external hard drive you buy. However many drive manufacturers include their own backup software (e.g. “Backup Anywhere” from Western Digital.) We recommend removing these 3rd party backup apps and simply use Time Machine which is best designed to work with the Mac.

  19. Properly Vent External Drives

    If you use an external hard drive, some models may overheat with continuous use, which may cause erratic behavior. Make sure your drive has adequate ventilation. One example is drives designed to sit upright like a book vs flat. Take care to ensure heat vents are positioned as intended.

  20. Power-cycle External Drives

    If you have an external drive connected, disconnect and power‐cycle them to make sure they get a fresh start. Then reboot the Mac and plug them back in.

  21. Format External Drives For Mac

    Although the Mac is capable of using an external drive formatted for Windows FAT-32 or NTFS, it is much better to use the native Mac format known as “Mac OS Extended (Journaled)”. You can check the format by selecting the drive (either on the desktop or via the Finder’s Go menu > Computer command), and press Command–I or select Get Info from the File menu. The info window will display the disk’s format. If it is not using the native Mac format, you should consider backing it up first, then erase and format the disk using Disk Utility (in the Application/Utilities folder), and finally restore the files from the backup.

  22. Eject Optical Media

    If you have an optical drive, make sure to eject any mounted CDs or DVDs, as sometimes the system may try to access the disc at random times and cause a delay as it waits for the drive to spin up.

  23. Eject Network Volumes

    If you use a network volume, server, or “shared drive” try un-mounting the volume to see if it was contributing to system delays.

  24. Disable MacBook’s Sudden Motion Sensor

    When using a MacBook that contains a traditional non-SSD hard drive near a subwoofer, the vibrations may trigger the laptop’s Sudden Motion Sensor that is used to protect the hard drive in case of a drop. This “SMS” drop protection feature can be disabled in these cases to prevent the sub’s vibrations from parking the drive and causing system delays. Apple has a SMS support article describing the procedure.

  25. Adjust Energy Saver Settings

    Open your System Preferences, and click on the Energy Saver icon, and try unchecking the “Put the hard disk(s) to sleep when possible” option. Note in contrast we recommend you disable the “Keep All Drives Spinning” option under the General tab of MegaSeg’s preferences unless you use an external hard drive.

    On some Macs there is a pop‐up menu called “Optimization” which you can try setting to “Better Performance”. On older systems under the Options tab, there is a preferences for “Processor Performance”, which you can try setting to “Highest”. (Note on laptops, using these settings will run down the battery faster.)

    If your system does not have an “Optimization” or “Processor Performance” setting in the Energy Saver settings, you may still be able to change it using the command line (Terminal application). To do so, open Terminal (found in the Utilities folder), and enter “sudo pmset dps 0” at the prompt. It will ask for your administration password. When set it will simply show another prompt. You can now Quit Terminal.

  26. Trim and Optimize Your Fonts

    Check your installed fonts to see if you have too many fonts enabled at once. This may cause your system to slow down. Apple’s Font Book application can be used to manage your fonts.

  27. Quit All Dashboard Widgets

    Some widgets use a lot of RAM and may even grow in size over time as they are open, which can cause system slowdowns. Others may constantly access the network which could cause a stall if the WiFi signal becomes weak or the network bandwidth degrades. Try closing all open Dashboard widgets by clicking the + button on the bottom left corner while your Dashboard is displayed, then click the X next to each open widget. Newer versions of macOS include an option to disable the Dashboard entirely in the System Preferences’s Mission Control settings.

  28. Trash Preferences

    While not likely a cause of issues, you may want to try trashing MegaSeg’s Preferences file. This will reset most of MegaSeg’s settings to their default values, but not delete your library, playlists, logs, or events (however if you use a custom data folder location, you will need to reselect it).

    Below is a list of paths to MegaSeg Preference files (depending on the version) which you can copy and paste into the Finder’s Go menu > “Go to Folder” command:



    ~/Library/Preferences/MegaSeg Prefs   (*older versions only)

    ~ = your home folder (i.e. Macintosh HD/Users/...your username.../)

    Note you must quit MegaSeg before trashing the preference file and reboot your Mac before relaunching MegaSeg in order to fully clear the preferences. Also if navigating to the preference file manually (rather than using the Go to Folder command), your Library folder will likely be hidden by default, but you can get into it by holding down the Option key while selecting the “Go” menu in the Finder.


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