at the same time? We're closing on a townhouse later this month and we'd like to figure out a way to be able to be able to connect to a speaker on the first floor while also being able to hear the tunes on a speaker in the basement as well as on the second floor. Does such a system exist? And if so, does one exist that isn't 12.5 billion dollars? When I search online it seems like the only things popping up are individual portable speakers.