I wouldn't try passing video signals through the audio ports on the ZPR, they are volume controlled and the levels could damage your video inputs on the remote device. If you're not using all six zones and all eight sources you could devote three to each and write IR macros that switch all three inputs to the respective three zones at once. I've experienced better results by directly connecting the composite video to my projector and using the ZPR only for RCA inputs. You can then modulate the RCAs into Coax (and affordably) distribute the video to each zone. The quality is not as good as composite on the remote TVs, but there is little difference in the picture on my projector using composites versus a 60" big screen being fed DVD signals out of RCA jacks, through the ZPR then modulated to COAX. If you try using three zones and three inputs, let me know how it works...