Wireless speakers for Pioneer Amplifier

I have a Pioneer VSX-1021-k receiver.
We built a sun room around the home theater, but forgot to include the kitchen which has a view of the TV over the sink. I thought that I could use the USB device for Pioneer, but they told me no.

Does anyone have an idea on how I can do this? Best buy has a solution that's about $800. All I want is a small speaker so I can hear the news while I'm cooking.

Any ideas??

Maybe something like this,

Advent AW823C Wireless Speaker

You could keep the speaker in one of the kitchen cabinets, then just set it out to use.

Do a search for "900mhz wireless speaker" and you will find some other options.