Have you thought about running the wires behind the walls/sheetrock? I did this with the sound in my gameroom. We already had the TV mounted and the cords running behind the wall from our AT&T box/Xbox/PS3 so when I dropped in a receiver and brought in the surround sound, I just went up into the attic and ran the lines there to keep from having either cords or those tacky covers on the wall/ceiling. The other option if you're not comfortable with running it through the attic (or its not easy to access) is to run it along the baseboards (depending on your baseboards, there might be space if it stick out some) and then into the wall, up to the speaker-level, out of the wall, etc. I've known some people to run it under carpet too, since the padding more or less hides it.