My new favorite site - finetune. Basically you make playlist from what they have and you can listen it to whenever ... well I mean as long as you have your browser open. The only downside is you have to load up on 45 songs (too much) and you are limited to 3 songs from the same artist but otherwise it is pretty sweet. I have already made 3 mix tapes/playlist. Check them out and start making your own so I can listen to them at work :)