typefindfunctions: audio/mpeg: mp3, mp2, mp1, mpga
typefindfunctions: application/x-id3v1: mp3, mp2, mp1, mpga, ogg, flac, tta
typefindfunctions: application/x-id3v2: mp3, mp2, mp1, mpga, ogg, flac, tta
mad:  mad: mad mp3 decoder
mpegaudioparse:  mp3parse: MPEG1 Audio Parser
lame:  lame: L.A.M.E. mp3 encoder
ffmpeg:  ffdemux_mp3: FFMPEG MPEG audio demuxer
ffmpeg:  ffdec_mp3on4: FFMPEG MP3ON4 decoder
ffmpeg:  ffdec_mp3adu: FFMPEG ADU-formatted MPEG-1 layer 3 audio decoder
ffmpeg:  ffdec_mp3: FFMPEG MPEG-1 layer 3 audio decoder
ffmpeg:  ffenc_mp3: FFMPEG MPEG-1 layer 3 audio encoder