Have you looked on Windows Update lately? No? You should... at least if you are a running an English version of Windows Home Server.
Why so? This morning we just released Power Pack 2 to Windows Update!
What do you need to get it? Just make sure automatic updates are enabled and you'll get it automatically tonight, otherwise you can manually run Windows Update from the console and after a reboot you'll have installed and ready:
No... Power Pack 2 does not include Windows Media Center... but with this update, computers that are running Windows Media Center can now connect to your home server to save and play content that is stored in shared folders!