I was able to get the RSB-14 and the RW-1s working for a surround setup. It took a while with the tech support, but I got it figured out. I had a few issues. One I had was verifying my source was a Dolby 5.1, which I was able to do. Another was my home network. I had to upgrade my router to a faster one that is on the DTS Play-Fi recommended list. The DTS Play-Fi site has a lot of good troubleshooting information and explanation on how to setup your network.
http://assets.klipsch.com/files/Play-Fi-Compatible-Routers-tested-by-Klipsch.pdf
https://play-fi.com/faq/entry/recommended-routers-and-network-specifications
The last bit that got me over the hump was that I thought I had installed the proper firmware on the RSB-14. The About in the app said I was using 4.008 firmware, but the install did not complete. I tried a few times with one flash drive, but I would get an install error. When I tried another flash drive, the installation completed successfully. I was then able to get audio from my rear channels when I made the surround group.