Specifications

/dev/music
high−level sequencer interface
/dev/sequencer
low level MIDI, FM, and GUS access
/dev/sequencer2
normally a link to /dev/music
/dev/midi00
1st raw MIDI port
/dev/midi01
2nd raw MIDI port
/dev/midi02
3rd raw MIDI port
/dev/midi03
4th raw MIDI port
/dev/sndstat
displays sound driver status when read (also available as /proc/sound, removed in 2.4 kernels)
The PC speaker driver provides the following devices:
/dev/pcaudio
equivalent to /dev/audio
/dev/pcsp
equivalent to /dev/dsp
/dev/pcmixer
equivalent to /dev/mixer
6.2. How can I play a sound sample?
The Linux Sound HOWTO
6.2. How can I play a sound sample? 17