Wireless transmitter for rear home theatre speakers

[ADRAM3L3CH]

Has anyone come across any products that can convert a wired home theater speaker to wireless?

I have seen a few on amazon but cant find anything locally.
I dont want to run any cables for my rear speakers and there is power available so that inst a problem.

 

[upup]

I once setup a Ellies product, it use av in and the reciever av out.