Possibly migrating to a single file decoding solution such as libavformat.

• Reduces library dependency count
• Increases playable formats
  • I specifically want m4a/aac playback in our next version - Adam d
• User can recompile library to add new format support to an old version of mixxx

• Lots of work to make the change
• All our eggs are in one basket

• libsox
  • supports nearly every format known to man
  • can write many of them as well (for recording your set)
  • has built-in effects processing
• libavformat/libavcodec (the library used by ffmpeg and mplayer)
  • support lots of formats
  • support utf8
• xine-lib
  • supports lots of formats and is extensible
  • use to play audio from (multiplexed) video files
  • future VJ support?
  • It's not totally cross-platform yet but progress is ongoing: http://www.xine-project.org/about
• gstreamer
  • used by Songbird
  • plugins allow more formats (QuickTime, WMA, FFMPEG, etc.)