How and where do I plug the stand bit, have sorted the earphones and get radio but want to hear the TV. I have one wire with two yellow plugs at each end and another which is plugged into the stand bit, with a red and a black plug. I want to do this before Mr N comes home. At the side of the tv there is a red socket sayin R and a white socket saying L then a yellow one with a square and an arrow in it, then above that there is an earphone socket. At the back there is Line out L and R and audio in, plus other sockets??? Help in simple terms plase and thank you!