I've tried searching but can't find the same scenario as mine. Here goes: I have one mac with two user accounts both logged in and both with shared iTunes libraries. I can view these two libraries on my laptop. However, I can only access one of them. If I try to open the second I get this error message: "The shared music library ****** is not accessible for an unknown resaon (-3259) Check that any firewall software running on either shared computer or this computer has been set to allow communication on port 49152" I have checked both computers and the firewall is configured for iTunes music sharing. Why do I get this error message for only one of the shared libraries and not the other one? What is port 49152? iTunes music sharing is port 3689. Does anyone know why I can't access this library? Cheers for any help.