The common codebase is great, but again it depends on the licensing. WMA was in the Rio Reciever and Rio Central long before the empeg not for any technical reason, but because of licensing issues. If SonicBlue precieves Vorbis on the empeg as an added expense, it won't happen any time soon.

More owners here need to buy one of the other products and request support for it. I'll probably write up something soon when I get my RioReciever. But asking for it on the empeg is a slim chance of success.