Spotify has announced a set of new features with the aim of “evolving into a total music management platform”, according to today’s blog post. There are two key features, available to both free and paying users.

The first is a link to Facebook, enabling you to see and share the playlists of your Facebook friends and to send them links to tracks.

Second, you can now Spotify to manage your local music library as well as what is available online. One reason to do this would be to fill gaps in Spotify’s database, formed by artists and labels who have not signed up – The Beatles, King Crimson, Metallica, Pink Floyd, Led Zeppelin and many more. This music can also be copied to mobile devices. It is not stated what format local music has to be in, but

Clearly the local music option may break shared playlists. Spotify will link to the same track in its own library where possible, or else come up with a replacement – maybe the same track performed by a tribute band, or who knows what?

Spotify is a game changer, partly because  thanks to the high quality of its software, and partly because it comes close to an ideal concept for listeners: play anything you like, wherever you like, and for free. Whether this is a viable business model for the music industry is open to question, though the combination of advertising and premium subscribers does provide some income.

The most interesting aspect is the Facebook link. It is another example of how Facebook is worming its way into other online services and helps its goal of being your key online identity, at least for social matters.

A YouTube video has a demo of the new features.