I agree with you, silverhead, that the Kindle isn't a Bluetooth device and it isn't going to communicate with Amplifi. I was "fishing" for someone that uses the Kindle HD and, predictably, it makes sense that no one is using it because the HD doesn't have Bluetooth.
So, here's what I did. I had the Amplifi Remote app downloaded from iTunes. I deleted it, and downloaded it from my iPhone 4. It downloaded the last compatible app. I have the App on my phone. I expect to receive the Amplifi tomorrow, I will do the Firmware update on my iMac and, then, see how the Remote works on the unit.