Ok, iTunes home sharing was working a few weeks ago. It's a nice feature that allows you to 'share' the libraries on (up to 5) computers in the house. We got a new desktop and now it's not working. We're getting the following message when we try to load my daughter's itunes library from her laptop: "firewall software needs to be set to allow communication on port 3689". What does this mean and how do I change the firewall setting to allow communications on port 3689? We have Norton. We're also getting a message - randomly - that says "another computer on this network has the same IP address". All three computers (desktop, our laptop, daughter's laptop) have the same IP address. We have to constantly reset the router/modem because either our laptop or the daughter's laptop isn't connected to the internet, only local access is allowed. I think the IP address thing is part of the itunes home sharing problem but I have no idea. Can anyone offer any advice? Help? Info? Anyone? Bueller?