Use libao audio output library for sound playback
Name Category Description
adplay media-sound A console player for AdLib music
cmus media-sound A ncurses based music player with plugin support for many formats
cynthiune gnustep-apps Free software and romantic music player for GNUstep
dolphin games-emulation Gamecube and Wii game emulator
fuse app-emulation Free Unix Spectrum Emulator by Philip Kendall
herrie media-sound Herrie is a command line music player
higan games-emulation A Nintendo multi-system emulator formerly known as bsnes
kadu net-im An open source Gadu-Gadu and Jabber/XMPP protocol Instant Messenger client
libtimidity media-libs MIDI to WAVE converter library
mpd media-sound The Music Player Daemon (mpd)
potamus media-sound A lightweight audio player with a simple interface and an emphasis on high audio quality
rdesktop net-misc A Remote Desktop Protocol Client
sox media-sound The swiss army knife of sound processing programs
speech-dispatcher app-accessibility Speech synthesis interface
timidity++ media-sound A handy MIDI to WAV converter with OSS and ALSA output support
xmms2 media-sound X(cross)platform Music Multiplexing System. Next generation of the XMMS player
ydpdict app-dicts Interface for the Collins Dictionary
zsnes games-emulation SNES (Super Nintendo) emulator that uses x86 assembly

Thank you!