Playing M4A, M4P, M4B (AAC) Files

MediaMonkey 4/5 supports:

  • Playback of M4A/M4B (aac audio) files (up to 48KHz) via Windows 7/10 codecs. Note: Windows ‘N’ editions don’t include codecs, and they need to be installed manually.
  • Playback of ALAC files.
  • Playback of M4P (and M4A/M4B/ALAC) including > 48KHz via Quicktime. M4P content is only playable in MediaMonkey if Quicktime is installed and if the machine is correctly authorized in iTunes. If you have such ‘Protected’ files and would like to remove the Digital Rights Management (DRM) so that it can play on any player, upload all your music to iCloud via iTunes Match and then erase the files from computer (or move them so that iTunes do not see them anymore) before re-downloading them again. Once they’re re-downloaded, they should be in unprotected format and fully playable in MediaMonkey.
  • Encoding/decoding of M4A/M4B/ALAC (including > 48KHz) files via the MediaMonkey Codec Pack (purchased separately). The MediaMonkey Codec Pack is also required for playing M4A/M4B streamed from a UPnP (DLNA) server.

MediaMonkey 3 supports Playback of M4A/M4B/M4P/ALAC via Quicktime, and encoding/decoding of M4A/M4B files via the MediaMonkey AAC/M4A Encoder/Decoder Plug-in (purchased separately).

Note that the MediaMonkey Codec Pack and AAC Encoder Plugin, can play AAC audio files, and convert and analyze all AAC tracks that don’t have DRM, but do not supported DRMed content (i.e. .m4p files cannot be converted or analyzed). Playback of DRMed content requires that Quicktime be installed.

MediaMonkey 2.5 does not include AAC support at all, though playback support can be added through the use of third-party plug-ins. This support is available using the following plug-ins:

  1. MP4 input plugin. This supports unprotected .m4a and .mp4 files and can be downloaded from:
  2. Winamp MP3/MP4 input plug-ins. The MP4 plugin supports unprotected .m4a and .mp4 files and is included with Winamp 5 and can be copied to the MediaMonkey plug-ins directory (both libmp4v2.dll and in_mp4.dll must be copied). The MP3 plug-in supports AAC files.


  • M4B Audiobooks over ~500MB in size fail to play when MediaMonkey is relying in QuickTime for playback due to a limitation in QuickTime. In that case install the MediaMonkey AAC/M4A Encoder/Decoder Plug-in (purchased separately).
  • That AAC playback in MediaMonkey 3/4 can fail if you’ve performed an upgrade from MediaMonkey 2.x to MediaMonkey 3.x/4.x, and the AAC plugins installed for MediaMonkey 2.x have not been removed –these may interfere with the native AAC plugins available for MediaMonkey 3.x/4.x.

Applies to: ,

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