I am wondering about that.
My current plan is, sorta like this:
Squeezebox touch in Living room connected to local speakers. (zone1)
Kitchen – Squeezebox Radio and some ceiling speakers (zone2)
Bathroom – ceiling speakers wired back to comms cupboard (zone 3)
Bedroom 1 – ceiling speakers wired back to comms cupboard (zone4)
Bedroom 2 – ceiling speakers wired back to comms cupboard (zone5)
Whole house will be wired with cat6, so I was going to run some extra cables into the ceiling space, even though I mighten connect them for a while.
Not sure how I will drive the ceiling speakers yet, but I know I don’t really want to put devices in the ceiling voids if at all possible.