The latter, my plan was to have pairs of speakers in four different rooms ideally with a volume control in each room. All fed by the same amp which is hooked to the computer. Thank you,
Then you can take the computer out of the equation. You're looking for an amp/receive with multi-room control. The computer will provide a single stereo signal (L/R). The splitting it up is all downstream. I can't do your shopping for you or really offer any suggestions on the amp. But you are essentially looking for something like this http://www.electronichouse.com/artic...tiroom_amp/C53
You could try a new post in the Amps/PreAmps section. You probably won't get much traffic on this thread because the title of your post is misleading.
p.s. an alternative route is to go wireless from your computer and put an amp/receiver in each room. Might cost about the same, depending on how much it costs you to run all those wires...if interested in how to do this, put a post in the computer audio or digital thread. You can potentially have completely independent systems in each room using one shared digital library
Find out if the PC has a digital or SPDIF output, if not a very cheap soundblaster series add in card will do the trick..., connect the digital output of the computer (2ch) or multi, whichever you want, to the amplifier's digital in (coaxial digital) and you have your source connected. Now just simply purchase a speaker selector switchbox (www.partsexpress.com) . and connect the A and B terminals of the amplifier to the spkr selector box MAIN IN jacks.....then connect the additional speakers for each room to the switchbox / room1 room2 room3 etc. I am quite sure you can pick up the volume controls for each room at most electronics stores ie radioshack, etc. I have done a setup like this in the past for a guy in a log cabin in the woods. It turned out pretty nicely with the addition of his in-wall 12" sub with an external amp in the rack with the yamaha receiver and a couple choice sources. cheers!