Spotify

I'm giving the just-released Spotify a try even though I'm already paying $60 a year for Napster.  Both work the same. Although Spotify is more of a social network streaming service.  Napster is more bare bones. Spotify is free for the first 6 months, and then you pay as much a month as Napster ($5).
In other words, I'm not sure after my freebie runs out that I'll stick with one or the other.  But I'm partial to Napster.