I would think that you need to look into WiSa speakers and the proper transmitters associated with them. It isn't really a clean path to do what you need to do, and odds are really good that unless you plan to get rid of your ceiling lights, you don't really have power up in the ceiling. You have a switched circuit up there which is NOT on all the time, and it won't do you any good unless you turn the lights on and leave them on forever.
But, WiSa wireless is the way to go. Plan to spend a good amount to get there.