Today, I tried to use the wireless sync functionality of Zune, but got an error when the player trying "Connecting to PC".
First, checked and tried various setting based on MS support page:
It didn't solve the issue.
Then, I carefully reviewed the services one by one, then I discovered enabling following services made it work:
(I'm using Windows Server 2008 x64)
PnP-X IP Bus Enumerator
Zune Network Sharing Service
Zune Wireless Configuration Service