Home network using Time capsule as router (cable modem on WAN). WPA2 encryption on, with password. Airport Express for b/g; TC for N. Wife's laptop shows up in shared items as it should, as does time capsule. However, neighbor's music server shows up as well. In fact, I could access it for iTunes sharing the other night, although that's a first, even though the device is there. I can't access it through finder, however--connection failed. I thought I had a decent idea of networking, but do I have an unsecure network? I doubt he's hacked our password. Why would this show up in shared items? He shouldn't be on our subnet, or I on his (and we haven't joined his network).