You can also use Scour Exchange. It's basically just like Napster but better in the sense that you can find not only audio, but videos and images as well, which is good for an Asia Carrera fan like me!
Try Audio Galaxy for Mp3s as well. It seems smaller tha nNapster network wise, and it's much easier to use. Oh, I can't wait to go back to school and get my T1 back...there are so many songs I still need.