Sounds like being busy in this case equates to swearing up a storm trying to get this to work. Might also want to inform them, when you pass on the job, that alot of other professionals will probably feel the same way you do, and that the pre-wire that was done by the builder is pretty much useless. It sounds like a bad situation, but with a few tests, if they all work out okay, then it might not be such a bad situation. It might just need a little adaptation. Sounds like there's no volume control locations to any room. So ya might need an RF remote system, mono speaker in the kitchen, and put a pair of walljacks in the bedroom, or go with the speakers they hoped for, it doesn't make sense for you and I, but they might shell out more moolah if you're willing to do what they want.