I was delighted to discover that BackTrack Linux's default installation of Firefox contains a bookmark to Soma.FM. If you haven't checked them out, I would suggest doing so right now. It's an independent (Internet) radio station (?) that is entirely community funded. They have a great selection of stations and are well worth the few mouse clicks it takes to tune in.
At this moment I am listening to the station "cliqhop idm" described as "Blips'n'beeps backed mostly w/beats. Intelligent Dance Music."
Or you could always just...
yes > /dev/dsp
10 points to the person who leaves a comment explaining how to pipe infinite bits of /dev/urandom to /dev/dsp!
~ noise ~