Need help with wireless headphones and setup

I'm looking for a way to hook up wireless headphones to the two TV's in our house.

Here's our setup:

TV-1 (plasma)
DVD hooked up via component
PS3 hooked up via HDMI
HD-DVR cable box hooked up via HDMI

TV-2 (LCD)
DVD/VCR combo hooked up via component to TV
HD cable box hooked up via HDMI

I know for sure there are no headphone jacks on the TV's. I have to verify but I'm quite sure there are no headphone jacks on the cable boxes as well. If I'm not mistaken, most wireless headphones are usually connected to some sort of home theater receiver since they need some sort of amplifier device. However since we have no home theater receivers hooked up to either TV, I need an alternate solution to get wireless headphones hooked up to the TVs.

Also, does anyone have any recommendations for wireless headphones? Sub $100 preferably.