I am moving my Sony plasma and surround sound system into a conservatory that is still being built. My wife nags me about the cables that go to the rear speakers so I would like to put them under the floor before it is screeded. Can I buy face plates to put on the wall at each end before it is plastered that I could then simply plug into at each end that runs through a pipe in the floor. Also where can I buy the equipment. Pardon me but I am a newbie. Hope you can help thanks John.