Please recommend a multi-zone receiver for the following roomsownstairs:-6.1(no center speaker) for HT in living room-2 speakers in kitchen (audio only)Upstairs:-2 speakers in master bedroom (audio only)-1 speaker in master bathroom (audio only) -2 speakers in study room (audio only)I was thinking about getting one receiver for the HT, one for the bedroom, and another for the study room. But using the search on this forum, I just learned about the multi-zones. I'm just confused as to how one would use the remote to control the receiver if I were upstairs and the receiver were to be downstairs...