Aaron,
You can probably play music from a cd with any cd player, you can probably
play a wav file with
play file.wav
but you can't play an .mp3 with xmms. You'll need to recompile a kernel
with your sound card selected.
Have look at the Debian University:
http://www.xnet.com/~darogers/debian_university.txt
I've just emerged from the cannot open /dev/dsp dilemma myself.
You may still need to run xmms with sudo, even though you're in the audio
group.
Get hold of grip; put a cd in you cd; you can play any track.
Rip a track (right click on it to select).
Play it as a .wav.
Get BladeEnc.
Encode a .wav.
sudo xmms
Select your .mp3 .
You'll know then if you need to recompile the kernel.
Best wishes.
