Can you send me your whole smb.conf file (sanitized if you like)

what version of samba are you using (not that it really matters I think)

If this thing produced some sensible errors in the logs I'd have this fixed by now.

The good news is you got it to work, so that means it's at least possible.

Just to clarify you don't have a Windows Media Center server on your network, you just have Windows Media Connect and a linux box?

Greg