Does a Sonos Sub behave like any other node on Sonosnet? I ask because I positioned a Play:5 not three feet from one today and it couldn't participate in the network. The Play:5 was brought to the outside of the house and plugged in on the opposite side of a stucco wall from the Sub, but at such short range to its nearest neighbor, I would have thought it would work. I bought the Play:5 so I could bring it out to our back yard now and then, and it failed miserably on the first try. Works fine inside the house, 30 feet from the nearest other Sonos component, but it is useless in its intended position, very close (albeit on the exterior wall from) a Sub. Any thoughts would be most appreciated.