AV receiver and wireless speaker solution...

[marcgti6]

I'm not sure that such a product exists but here's what I'm after.

I've got a Denon AV receiver with two zone outs in my living room. I have some B&W ceiling speakers in my bathroom. As a temporary solution (before I decorate other rooms and run proper cable), is there something that I can buy that has a box of tricks at one end to connect to the speaker terminals on my AV receiver and another box of tricks that would connect to the speakers themselves, using RF or WiFi to send the signal between?

Hope this makes sense! Cheers.