Streaming music service Spotify has submitted their iPhone App to the App Store for approval.
If approved, it would bring more than 6 million songs on-demand, giving you the ability to create
and save ordered playlists of songs, and it will also allow you to save
your favorite songs offline so you can play them even when you're not
connected to the internet which Spotify considers is the killer feature of the app.
But only problem is that its widely speculated that Apple will reject the iPhone app.