Phil UK 87 - 2013-01-27

Hi guys, I've used Murmur over a LAN with no problems, but over the internet it seems to not be transmitting any sound. The only difference is that my brother's PC is across the country instead of in the next room (the server is running on my PC, and I use the client on this PC too, connecting to it using the LAN IP address). All settings are default on server and clients, except for anything which was changed by the audio wizard.

After forwarding the port, my brother is able to connect to the server and text chat works ok, but the mouth icon of the other person stays grey (I can see mine go red when I talk, but it stays grey on my brother's client, and vice versa). So obviously there's no sound coming through. Any ideas on what the problem could be?