One of the many programs you can use to play mp3s in Linux is xmms.

> Hello, I have Redhat Linux 7.2 and I was wondering if it is possible to 
> listen to mp3's under linux, and if so what program would I need. Thanks Alot.
> -Derek
-- 
"Rationality of thought imposes a limit on a person's concept of his
relation to the cosmos."- John F. Nash, Jr.