Hooking up cable TV to stereo speakers is a fairly simple task. You don't need anything more than a TV, composite stereo cables and either a stereo receiver or an input on the set of stereo speakers to receive the composite stereo cables. With this hookup you will be able to choose if you want to listen to the cable TV audio through your TV or through your stereo speakers.
Hooking Cable TV to Stereo Speakers
Plug one end of the red and white composite stereo cables into the back of the cable box in the "Audio Out" port.
Plug the other end of the composite stereo cables into the stereo receiver or main speaker that has an "Audio In" port for the red and white composite stereo cables.
Turn on the cable box, TV and the stereo system and check to make sure the cable TV audio is now coming out of your stereo speakers.