How do I allow upnp media play?

I've set my wife up with fedora 18 and have had to disable firewalld in order to allow her to watch stuff on our media server. I'd like to configure things correctly though. It looks like we query the ssdp port on the media server over udp and that reply is blocked. This seems odd since the client sends an ssdp query to the server first. I would have expected the RELATED,ESTABLISHED to match. What's the right way to allow this to connect?