It's easy to play mp3 music files on Amigo Linux.
Configure sound card by editing /etc/rc.d/rc.modules
(or ask the forum if you cant' get it right)
Install from Slack CD1:
installpkg /slackware/ap/rexima-1.2-i386-1.tgz
installpkg /slackware/ap/amp-0.7.6-i386-1.tgz
type command 'rexima' to adjust speaker volumes, and 'amp <name of mp3 file>' to play music.
run command:
chmod 666 /dev/dsp*
chmod 666 /dev/mixer*
This lets you access the sound devices as a regular user.
It only takes 100K space to turn Amigo Linux into a "music box", not bad at all.