Stop chasing your music across different machines, services and websites. It's time to take the work out of "play". If the song you want to listen to is in your local library, it just plays. If the song is on a remote machine, it just plays. If the song is on the web, or available from your subscription service, it just plays. By abstracting a piece of content's metadata from its file location, users can easily share playlists, listening history and more.
It's sort of like Wonka Vision,
TOMAHAWK will reassemble it on the other side. OK, maybe that's not a good analogy... but it's just as delicious.
Open source never sounded so good.