[Looking for anyone in the world who has gotten 5.1 surround working via Play-Fi]

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.

[Unable to update Firmare on RW-1 wireless speaker]

I believe I was able to update my RW-1s with the Klipsch Play-Fi app directly and didn't use the utility.  You can also check the firmware version in the app in the About section of settings.