When I downloaded the latest version of iTunes, I finally figured out why I had been unable to share my music files over our home LAN through iTunes. "Other users will not be able to access your shared music because port 3689 is being blocked by your firewall software. Please disable the firewall for port 3689 and restart iTunes." Ok, message recieved. I go to our router IP in Safari, as I recall having tried to enable a port for playing a game over multiplayer, but I have forgotten how to and am clueless now. Can someone help me figure out what I'm looking for, and how to know if I'm enabling the port correctly? Thanks a lot!