Don't know if you guys have already seen the articles, but I intentionally paired the Cambridge Azur 840C player with the Sonos Digital Music System for the express purposes which are being discussed here. The Cambrdidge review was published on Dagogo.com a short while back, and the Sonos review was just put up this month.
http://www.dagogo.com/CambridgeAzur840C.html
http://www.dagogo.com/SonosZonePlayer80.html
The Azur works will with a variety of sources. Cambridge's new DAC, though I have not heard, looks to be another good solution.