Add support for listening to www.last.fm through the swisscenter interface, as well as adding the ability to "scrobble" (report to last.fm on) the music that you listen to so that your profile is updated.
The description from the last.fm site:
Last.fm is the flagship product from the team that designed the Audioscrobbler music engine. More than ten million times a day, Last.fm users "scrobble" their tracks to our servers, helping to collectively build the world's largest social music platform.
Last.fm taps the wisdom of the crowds, leveraging each user's musical profile to make personalised recommendations, connect users who share similar tastes, provide custom radio streams, and much more.
It's never been this easy to share your taste and discover new music. Welcome to the social music revolution.