Just getting up to date and I notice Microsoft has posted a page for the Media Center problems with the latest Windows 7 release. http://support.microsoft.com/kb/961367 is the page where you can find the information and the hotfix. It explains the problem and has the official Microsoft links to the download. Fixes play back and record issues along with the MP3 problem I spoke about before in my post Windows 7 Beta is Available Now.
Todd's Tips for System Adminstrators