Thanks for the suggestion Pound, but the problem with your idea for my specific application is I would be adding a fair amount of wires to the equation, losing flexibility (could not have bluray/htpc going at the same time)....
I don't really need good sound to the Aux/side tvs... they are almost just "support" to the main display, anything worth having good sound would go to the projector and the receiver, while anything else on is most likely there for just the picture (e.i. pacman while the lady watches a movie, or a football game I care less about if the packers are on)... so quality sound to those isn't as crucial.
For what it's worth I am currently using this splitter from monoprice and it works great. I split the signal from my living room box up to my game room.
go to know that one works for sure, I think I'll test one of those cheapies before I do a full on stock up, but its nice to know I've got a fallback if they cheapies fail me
I got my new receiver and the parts for my HTPC last night, so after the pc build and some revamping of the current jerry-rig setup I'll see where I stand