XM Radio on your 360 setup
It can do high-definition gaming, surround sound audio, and even stream satellite radio right into your living room. If you are a faithful XM subscriber, you will probably find this useful.
Scott Hanselman was going to set out and code an application to pick up and stream his XM tunes through Media Center for his Xbox 360. But no sooner had he sat down, a Google search turned up an HTML-based program to do just that. Since the 360 can't just connect to a random stream via URL, this simple app takes advantage of XM's web feature that harbors the secure content behind usernames and passwords. So this enables you subscribers out there to listen in on your favorite channels from the comfort of your Xbox 360 setup.