I saw this product advertised a few months ago: the Macally mTUNE-N Cordless Stereo Headphones.
I am compelled to make fun of them. Can you imagine how heavy they must be on your head? And to skip songs or adjust the volume, you'd have to take the silly device off your head.
So a few days ago, I did a Google search on them - now down to $6.54! (That link probably won't last long - plus I have never heard of the vendor, TechGearDirect.)