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You can not connect the headphones to most larger TVs. This TV starts at a 40" and according to the spec sheet does not have a headphone output.
It does have a stereo output on the back. So, you can run RCA type audio cables to a stereo reciever and then connect your headphones to the stereo receiver.
Please let me know if you would like more information and/or clarification.
You're welcome and thank you for the "accept".
Look at the front of the audio system for the headphone jack. I don't have the book here. However, I believe that the system may have the jack in the front.
If you are sending the audio from the TV to the system all you need to is switch to that input and you should hear it in the headphones.