So I wrote server code to handle favorites and tested it with a test client and it works fine. However, trying it with the real Rio, nothing happens. I make a selection, press List, enter a number, press Enter -- nothing happens.

I'm using tcpdump to dump all UDP packets originating at the Rio:

sudo tcpdump -i eth0 -nn -t -X src host 10.0.1.10 and udp

I do see stuff go by for the initial SSDP requests, however. Any ideas as to why the Rio apparantly isn't sending anything to the server?