You should buy a digital optical cable of sufficient length and connect one end of the cable to TV and the other end to audio amp. It is not important which end goes to TV or amp. Whenever you turn the TV on, you should also turn the amp on and select the optical input to which you have made the connection. There may be several optical inputs on the amp. One for CD player, one for DVD player, one for satellite settop box, etc.. You can make the connection to whichever input is free.