Essentially, you will need the following equipment to get the ball rolling if you want the volume to be adequate enough in the other spaces
-AV receiver that provides what you need for the main surround viewing/listening space; ideally this will have L/R pre-out to connect a second amp. Zone 2 options on some models might not always work, FWIW.
-A separate dedicated amplifier to run the four pairs of speakers in different rooms and keep the volume adequate/lighten the load from the main receiver
-Speaker selector with impedance matching that can handle at least four pairs. Some of them can also help with playing back more than once source in the four different rooms.
*Monoprice may have some equivalent products as well. Check Crutchfield as well.
I suggest visiting AVS forum too and getting more of the gory details there. There's a whole treasure trove of discussion threads you can search through.
I'm moving into a new home that has surround built-in in the living room and ceiling speakers in 4 other rooms throughout the house. Connections for all these speakers are in the wall in the living room. I need a A/V receiver that can handle the surround (5.1) as well as the 4 other pairs of ceiling speakers. I'm assuming the 4 other sets of speakers would be front (type) speakers, so I want a receiver powerful enough so there's no lose of volume in each room.
Any suggestions would be appreicated.