How can stream music on my Droid?

I have apps like Pandora and LastFM, but is it possible to make streaming playlists of any song that I want on my Motorolla Droid? I notice that Grooveshark doesn’t work because it is flash based, and I heard the app isn’t worth the money.

I can listen to whatever song I want on the Youtube app but it’s always low-quality sounding…any apps/ideas?