Hoping some generous soul can help me with my problem, as I'm beyond frustrated at this point. I'm a networking noob (one of the reasons I have a mac) and I just can't seem to get home sharing working on the APTV purchased this weekend. Our primary computer is a mac tower, which is where our Itunes files reside. Ethernet runs from the computer to an airport extreme. Ethernet line runs out from airport extreme to APTV through an ethernet switcher in the TV room. I don't have a wireless card on the primary computer so we have to connect via ethernet (figured it was faster and more stable anyway). Internet is up and running on the APTV, meaning it's getting the signal via the router. Cannot get Home sharing with Itunes on the primary computer to work despite 4-5 hours of troubleshooting. I've done everything that I can think of short of running an ethernet cable directly from our primary computer to the APTV (can't because of distance). I've reset the APTV about 5 times, checked to make sure itunes is the most current version, disabled any firewalls on the primary computer (can't seem to find any to disable on the Aiport), turned off all other sharing on the primary computer (the old version of sharing within Itunes and sharing in OS preferences), reset home sharing multiple times on both the primary computer and the APTV, restarted both the computer and the APTV multiple times, reset the router, taken the ethernet switcher out of the mix to see if it changed anything (it didn't), and done everything else recommended here http://support.apple.com/kb/TS3509 and the comments about this problem here http://reviews.cnet.com/8301-13727_7-20018128-263.html. Any other ideas, as I'm seriously pulling my hair out at this point? TIA.