Spotify: University of Warwick Playlist
Writing about web page http://open.spotify.com/user/mathewjm/playlist/2l7tQUrlTmhoSBiWqjWp7K
For those that aren't aware, Spotify is probably the hottest thing in music right now. Provided you are at your computer, you can listen to vast swathes of music legally and for free.
UK users can sign up for Spotify for free
As an experiment, I've created a University of Warwick playlist that anyone can add music to. Go!