But that's the entire point of using global shortcuts - I never have my media player focussed. I specifically had to enable global media shortcuts in it and Firefox should do the same: ask the user if they want this feature, and not assume that no other application might want to get hold of a global resource. As always, the mind game "what happened everyone did it like that?" is very important here.

Anyway, I just got the Firefox update and it seems like my media player seems to "win" over the global shortcut from Firefox that I didn't ask for. So all is good for now...