media-libs/audiofile
media-libs/taglib

arts?
      ( kde-base/arts )

esd?
      ( media-sound/esound )

flac?
      ( media-libs/flac )

mad?
      ( media-libs/libid3tag media-libs/libmad )

musepack?
      ( media-libs/libmpcdec )

modplug?
      ( media-libs/libmodplug )

timidity?
      ( media-sound/timidity++ )

vorbis?
      ( >=media-libs/libogg-1.1.2 >=media-libs/libvorbis-1.0.1-r2 )

=media-libs/musicbrainz-2*
>=gnustep-base/gnustep-make-2.0
virtual/gnustep-back

debug?
      ( >=sys-devel/gdb-6.0 )