Just bought a Voice Remote Pro because I wanted to have a couple programmable buttons. My intent was to set one of the buttons to match one from my sound bar remote (Polk MagniFi Mini AX) so I can cycle through the sound modes without having to pick up that remote basically ever again. I can't seem to find any instructions on how to do that and now I'm worrying that this won't be possible. Can anyone give some guidance on this? Thanks!
Sorry, you can't do that. You can only program the buttons to launch a channel/app. They're similar to the "Partner" buttons (e.g., Hulu, Netflix, etc), but you get to choose what channel gets launched.
The programmable buttons on the VR Pro can be used to replicate commands you can issue verbally. If you can't successfully get the Roku to respond to a particular vocal command, you can't then lock it into one of the programmable buttons.