You should check out audme.ru. Someone on these boards (I think) turned me on to this site, and talk about having access to any song you can think of...

The only problem seens to be that you can't stream the song directly from the browser like you can on your computer (odd limitation for the N900's browser) but the MP3's download just fine. It will probably get your time to listening to under a minute - impress the ladies!