How about hanging the surrounds on the side walls, but near the rear wall. One either above the book case, or affix a white board to the front of it and place the surround on the new piece of wood. For the other side, mount the speaker between door and window.

I posted some pictures earlier in this thread of my living room where I decided not to mount surrounds. Back in the day when I only had a HTIB setup with small speakers. I put one surround above the curtains about in the center of the room. Then the other one on the tall wall, but directly across from the other speaker, so it was only about halfway up the wall. This was sorta ok, but didn't work too well for those sitting in the back of the room.

Last edited by CatBrat; 04/07/11 08:17 PM.