I own a pair of HDR 120 headphones which have worked fine since I've had them. We got a new TV (Samsung model 7200), hooked the headphones up to audio plugs on the back and it did not work (no green light, I think they're probably audio "in" plugs). There is an "audio out" plug which looks like a single pin plug but we can't plug the dual phone plugs on the headset to it. Can these headphones work with this TV? Do I need some sort of an adapter?