[dnanian]

OK, if you've got a window that moves offscreen, let me recommend that you delete the com.shirtpocket.nettunes.plist file in ~/Library/Preferences. It sounds like it got corrupted somehow.

Regarding being unable to connect, I've only seen that in two situations: a firewall blocking the actual port on either the client or server (double-check that it's really off), or using a symmetric NAT (such as using one Mac as a base station for another Mac, and running the server on the same Mac).

Any chance you're experiencing either of those?