I hope I've put this in the right forum. Here's my situation that I'm currently trying to figure out.
I just bought a Logitech Z-5500 speaker setup, (no critique unless you're going to tell me they're AWESOME!

), and I'm going to mount the satellites in each of the four corners of my living room. However, my projection screen is on the north wall, and the TV is on the west wall. What I'm thinking of doing is mounting the center speaker above the projection screen, and having the sub in the NW corner between the TV and the screen. Then I'll get another center speaker to place below the TV, and finally I'll make a little doohicky thingambob to switch the satellites through 90 degrees, (FL to RL, FR to FL, etc., as viewed when looking at the projection screen), and to swap the center speakers when watching the TV, and back again for the projector.
Now does this sound like a plan, or what?

So my question is this, what would the best way to achieve this with out screwing up the sound quality? I read a suggestion of using Cat 5 cable for wiring speakers, and I have a shit load of that I could use. I could simply add a switch to each of the five speakers I want to swap, but would rather do it with one switch if possible. Could I do this with a small circuit board and relays? Speakers don't have a common lead, so I'd have to switch both wires wouldn't I?
(I'm starting to think DPDT switches for the speakers, and wonder if there is a similar thing relay wise?)