OT: transmitting music with no wires

[Luca Formentini <luca@unguitar.com>]

Hello dear guys,
this is sure an OT, but I am sure I can get some useful informations 
from you.
I would like to have the music coming out from my living room hi-fi ( I 
am an old man) transmitted to another set of loudspeakers in a different 
room.
There is something like that made for headphones and I was wondering if 
a thing like this exists for a regular amp+loudspeaker system.

thanks for you minutes,
luca
www.unguitar.com