Hello,
as far as I understand the flirc USB dongle translates IR remote control signals to (emulated) keyboard keycodes (non-technical: key strokes).
There are many 'real' keyboards with special 'multimedia keys' on it (extra keys for play/pause, forward, backward, etc.). However the current Flirc application does not support mapping to such a keycode (even when mapping with 'full keyboard').
I would suggest that the Flirc application should be improved to support 'extended keyboard', so that you can define a mapping from RCs keys to (emulated) multimedia keys.
Kind regards,
aanno