I have left Microsoft and this blog is no longer under my control. All of the content should remain for some time however and any new updates can be found at http://davedev.net.
-Dave, September 2013
These are the just released beta bits (12/30/08), not the M3 build from PDC. Go grab them here and enjoy! After you install the beta release be sure to install the Update to Windows 7 Beta (KB961367). Download link is on the same page as the o/s install. This update fixes the mp3 issues people were having with WMP 12.