I bought a house and it has been pre-wired. Nothing is labeled but here is the best way I can explain how it is. There is one 2-wire speaker cable in my kitchen, office, dining room, main bathroom, and master bathroom. In my bed room there is one 2-wire speaker and 8 feet high and then 2 feet away there is a 4-wire speaker cable. Now in my living room there is a triple electrical box with four 2-wire speaker cables and one 4-wire cable, and in my bedroom there is a electrical box about light switch high with three 4-wire speaker cables and one 2-wire speaker cable. Any suggestions of what I can do with this set up I know ceiling and in wall speakers are required but the 4-wire cables have me really confused and am sure may have to do with some sort of volume control but I have no idea how to finish this project that was started by the original owner.