[ReCreate]

But torrent sites aren't legal. XD and no, it's just currently invite only(aka, only someone else with the service can give you the "code" for you to sign up to it with)
It also can be a very simple and easy means of synchronizing your playlists between computers, or simply being able to access them from anywhere. it's also a way to instantly listen to any song as if it was in your library, which isn't really comparable to torrent sites(where you have to manually find something and get it, then play it)