Specifications

Appendix A. File formats 151
A.2 Supported audio formats
Format Extension Notes
Lossy codecs
MPEG audio .mp1, .mpa,
.mp2, .mp3
OGG/Vorbis .ogg, .oga Some old “floor 0” files may crash
Rockbox.
Musepack .mpc
Advanced Audio Coding .m4a, .m4b,
.mp4
Windows Media Audio .wma, .wmv,
.asf
ATSC A/52 .a52, .ac3 Supports downmixing for playback
of 5.1 streams in stereo.
ADX .adx
Speex .spx
Lossless codecs
Waveform audio format .wav
Audio Interchange File Format .aif, .aiff
Free Lossless Audio .flac
Apple Lossless .m4a, .mp4
Wavpack .wv
Shorten .shn Seeking not supported.
Monkey’s Audio .ape, .mac Only -c1000 files decode fast
enough to be useful.
Other codecs
Sound Interface Device .sid
MOD .mod
NES Sound Format .nsf, .nsfe
SPC700 .spc
Atari SAP .sap
The Rockbox manual Sansa e200 and e200R Series