Check out the Sennheiser HD 175...I have them ....sounds really, really good
I believe the device that gets plugged into the HDMI port needs to support ARC. Most likely the adapter you bought doesn't.
Your TV probably has an optical output. I would use that to an external DAC such as the JDS Atom DAC+ ($109) which is then connected to your wireless transmitter.
Yage, I ordered the top one, will be here tomorrow. I think if I use the optical output from the TV to the above unit I should be able to use a 3.5mm patch cord from the above unit to the wireless transmitter for the headphones and have audio. The thing is, I want to be able to use the headphones for myslef but keep the audio coming out of the TV speakers, both at the same time. I will let you know how it goes.
Yage, to give you a better idea of what is going on I am attaching some screen shots. The first is of the instructions of how to select PCM audio on my Hisense TV. The color shots show the options I have while setting up the audio on the TV itself. As you can see, the options in the TV don't match the options in the instructions. I should be getting the item I told you I ordered this afternoon. I will hook it up and let you know what happens.
It seems to be a not so easy way to get audio out of the TV for headphones while keeping the audio coming out of the TV speakers. I remember when you had a seperate audio output that allowed you to do just that. Technology screws something up again!!!!
I don't see any screenshots but I think using the optical output should get you what you want. I connect the optical output on my TV to my DAC and the sound can play through the built-in speakers as well as through the stereo.