Last.fm
“It’s elementary! Once you’ve signed up and downloaded Last.fm, just listen to music through your computer’s music player – as you do every day. The name of each song you play will be automatically sent to our servers and saved in your musical profile. We call this “scrobbling,�? and it’s the basis of everything we do at Last.fm, from personalised recommendations to radio, music charts to musical neighbours, and much more.
Over ten million times a day, Last.fm users fuel the social music revolution by scrobbling their tracks. Ready to share your musical insights with friends, family, and the world? It’s free, easy, and a lot of fun: go ahead and scrobble!”



