Hi. I'm interested in having audio in a few rooms, but am wondering about the best approach. I currently have 5.1 in the living room running from my Yamaha RX-V2300. Should I simply run another pair of speakers off of the B terminals and a final pair off of Zone 2? Or should I get a speaker selector? If I go the speaker selector route, how exactly do those work? Do I connect the speaker connector from the B speakers? Are these bad for the receiver or speakers at all? Thanks!