Since you mentioned wireless, I was going to suggest Apple TVs as clients for each zone, but that would require your library to be in an iTunes friendly format. I don't know much about JRiver honestly. I have used XBMC and as an interface, I'm not a fan. The iPad remote functionality allows for both management and playback of my zones and library as well as individual remote capabilities of each Apple TV. The interfaces is very slick, the Netflix and Hulu GUis are the best available, and the overall reliability is. IMO unmatched in the network streaming world......and as to the 1080 zone, you'll need to hard wire that zone as full 1080p doesn't do wireless consistently.