Sound-software and CCRMA related:

Command	Description
sndplay	play a sound file
sndinfo	information about a sound file
sox	different audio file utilities
play	part of sox; basic reading and playing most soundfile formats
flac123	play a “FLAC” lossless compressed soundfile
ogg123	play a compressed audio “OGG” soundfile
mpg123	play a compressed audio “mp3” soundfile
ecasound	high quality audio recording, filtering and playback
aplay	command-line sound recorder and player for ALSA soundcard driver
aplaymidi	play Standard MIDI Files
timidity	play MIDI Files, MIDI-to-WAVE converter and player
lame	compress and create mp3 audio files
oggenc	encode audio into the Ogg Vorbis format
flac	lossless compress of audio using Free Lossless Audio Codec (flac)
cdrecord	burn “Wav” tracks in current directory
cdparanoia	copy cd tracks to a sound file in current directory
resample	change sample rate in a soundfile
sndrecord	record sound
sndsine	generate a sine signal