Our living room is triangular, and I'm having difficulty setting up a 6.1 speaker system. Any recommendations? The room is similiar to this:



With the "A" corner OPEN to our entry way and "B" corner OPEN to our dinning area/nook. The entertainment alcove (location of the screen, receiver, etc.), which came with the house, is located on the "c" wall, right about where the lower case "c" sits; the fireplace is to the right of that alcove. And our corner sectional sofa (to be purchased soon) will go in corner "C."

As you can see, I need help here.