Rewiring a room for new lights is one of the bigger challenges of any remodel. If you want to add a speaker system into the ceiling you can add another level of complexity. So what if you want to accomplish this without breaking any drywall. Impossible?
Klipsch lighting has a terrific option for this scenario ... the Lightspeaker. Designed to fit into any pre-exisiting 5 or 6 inch recessed light fixture with an Edison receptacle (standard light bulb folks!) the Lightspeaker uses LED lighting technology for low energy consumption.
The sound is transmitted to the speakers using a 2.4 GHz wireless system, with a transmission radius of about 50 ft. The starter kit (about $650) comes with 2 speakers, the transmitter and a remote control.