HRT Airstreamer RF System
While some companies have been focusing on using Bluetooth or Wifi to stream music around a room, HRT decided to use RF as their method.
Unfortunately, HRT's Kevin Halverson was in a bicycle accident a couple months back, so was holding forth from his wheelchair (he should make an almost complete recovery). Halverson said that the system will comprise two parts: a Wireless Master which sends the signal from your source (the smaller device in the photo) and the larger Airstreamer (seen in a photo mockup).
The RF signal can cover a distance of up to 15 meters and send 24/48 PCM. The system will cost $249 and should be shipping around March 15th. Hopefully Kevin will be walking around a bit by then.