So I just moved into a new house and the previous owner left me parts of his theater setup. I am clueless on how to set this up. He has his projecter mounted on the ceiling and has wired the cables through the wall into an adjacent room. Here are some pictures for reference: http://imgur.com/a/uJ3aa The 2nd image is the wires coming out of the wall in the adjacent room. I am assuming the black and red wires are for the speakers set up throughout the theater room, the white cable for the subwoofer, and the ypbpr is connected to the projector. But what about the green, red, black, and white wires? What is that for? I want to hook up a ps3, directtv, and occasionally a laptop. So what would I need to buy to put this all together? The Projector is an EPSON powerlite 821p.