Just read a review of the Chordette GEM - a wireless D/A converter designed to stream music over Bluetooth (!).
This product doesn't seem to address your needs, but it does reflect what seems to be a common theme with Wireless Audio systems: A fair amount of COST! ($799, in the Chordette's case).
From sketchy memory, do not recall that either Sonos or MusicCast systems (the only ones am at all familiar with) would fit your setup either...
What product(s) have you looked at?
Don't suppose you have the option of drilling a Discreet Hole beneath (or above) your Video source & running a hidden wire to your Audio gear?
Any option to make use of a Home Wiring Network for distribution?
In any event, Sounds like a FUN project....
