It was probably a fairly unusual request
, but FWIW if anyone other than Tony is also interested in listening to their Rio Central from a Roku Soundbridge, Sony Playstation 3 or other such UPnP client, the new 0.15 beta version of Chorale
lets you do just that, by running a republishing server on either Linux or Windows. There's also other stuff
it'll do, including stuff that may be useful even to people without Rio Centrals. Like I said, it's beta quality, but testers are always welcome...