My inquiry is mainly for applications such as Kodi that provide both "TV" and "Radio" categories in their interface. If there was a way to discern audio channels from "regular" ones, those specific channels could be separated out, and perhaps even demuxed to exclude the video stream(s), for the end user.
Such a feature may be beneficial to the HDHomeRun App as well, I think it would be pretty nice to be able to know that the FiOS channels that start with "MC" (Music Choice?) are basically radio stations, and instead of showing a static image of Jay-Z go to a screensaver or cool visualization instead
