Paul - Will your tRio / Riot UPnP implementation allow the Rio Receiver to operate "standalone" with the Twonky server?
A major possibility of the UPnP solution is that it would allow the RR to work without an active PC-based server - it could run from an NSLU2 or Buffalo Linkstation using the Twonky software + a port of RioBoot.
Although the tRio architecture is fantastic where an active Windows PC is always on (and is the software I use today), my understanding of the way it works has all of the screen / state handling provided by the tRio server PC - which I guess rules out the sort of configuration I have in mind?
Brgds
Phil