Spotify video demonstrates the features in their upcoming iPhone app.
But will this be accepted into the app store by Apple? If not, can Apple stop it legally? If they try it will probably cause an uprising online like they have not witnessed before.

On the other side, if they do accept it, what does that mean fro iTUnes and Apple. Will this make the look into different models of music distribution?

Either way it is exciting times ahead for us music loving consumers.