XMMS2 - MPEG-4 plug-in

 XMMS2 is a redesign of the XMMS music player. It features a client-server
 model, allowing multiple (even simultaneous!) user interfaces, both textual
 and graphical. All common audio formats are supported using plug-ins. On top of
 this, there is a flexible media library to organize your music.
 .
 This package enables decoding of data inside of mp4 containers for XMMS2.
 Together with xmms2-plugin-faad it's possible to decode .mp4 files. Combined
 with xmms2-plugin-avcodec you can decode ALAC files.