Audio file formats/codecs
3GPP (3rd Generation Partnership Project, .3gp)
FLAC (Free Lossless Audio Codec, .flac)
MIDI
MP3 (MPEG-2 Audio Layer II, .mp3)
OGG (.ogg, .ogv, .oga, .ogx, .spx, .opus)
RealAudio (.ra, .ram)
WMA (Windows Media Audio, .wma)
WAV (Waveform Audio File Format, .wav, .wave)