it has the potential, but seems to be highly buggy (at least with my keyboard)- i mapped the relevant media keys but it usually 1. only works when the yt tab is active (which makes it redundant) 2. only works when firefox is active (which makes it super redundant). I say usually because I'm not even sure why, but it varely rarely does work just when you exit the youtube active tab – but seems to cease functioning after using it as well. Not 1 star, 2 star for potential, 3 star because i give it the benefit of the doubt that it is me who cannot use it