I have a pair of homeplug ethernet adapters which feed both my amplifier and tv box,
The source of the music is on my nas server, and it is streamed down to my tv box and also to my amplifier.
From reading some of the replies I have had it looks like I'll be needing a usb wireless transmitter. The reason I want a wireless speaker is so that it can be used in another room where the wired speakers don't reach.