The next version of the firmware has been released, v2.2 which is part of GUI v1.1.6
This new firmware supports pairing of the media keys:
pause/play, next track previous track, etc.
You can also pair the suspend key which will put your computer to sleep. This was widely requested.
There is no official pairing in the GUI as of yet, you’ll have to use the commandline which ships with the GUI on every OS.