MediaPortal

http://team-mediaportal.com/

MediaPortal is an Open Source application ideal for turning your PC / TV into a very advanced Multi-Media Center. MediaPortal allows you to listen to your favorite music & radio, watch your video's and DVD's, view, schedule and record live TV and much more. You get MediaPortal as Open Source software. This means anyone can help develop MediaPortal or tweak-it for their own needs.