<font color='#008080'>Even more affordable would be to get a cheaper Cambridge Soundworks Model 88 (or similar), which will probably sound as good or better...
I'm not sure of an "inexpensive" way to run all these zones due to the cable runs, as peter pointed out. You would need to wire it, install speakers, and then get a speaker-level routing unit that handled 3 zones with volume controls.
If you really want to go all-out, check out
this company for ideas and then shop around.
Edit: edited link</font>