We moved into a house that has home theater system wiring in the walls. It looks like they were put in there when the house was being built, since they cannot be pulled out. We re not planning on connecting our own system through them and don t like them hanging from the walls where the speakers would've been. Since we re repainting the walls and fixing all the holes the painters suggested we just cut them and leave them inside. Is it possible that the wires are connected to some kind of a power source internally? Is it safe to just cut them? Thanks in advance!