No. Every fucking keyboard on the planet has a pause button on it. Who goes searching for a window to click a button to pause music?
I haven't logged in for as long as I can remember. I did so just now to say how dissapointing the tone of this comment is.
Beyond that, I don't come to this site to read people insult everyone else. Can you imagine going to a developer meetup where everyone just walks around and criticizes everyone else? But somehow people think that sort of thing is okay online.
As far as I'm concerned, people like this represent the worst form of hackers, and should not be welcome on this site.
Anyway, working on software that takes abstract input to a camera as an interface is awesome, no matter what particular bits of functionality they start off with.
To refute the parent, the problem exists. I have a keyword sans playback buttons. I've often wanted a quick way to pause music. Even on my Mac where there are playback buttons, sometimes ill be listening to Spotify, try to pause the song using the keyboard, then iTunes tries to open instead. I'm not sure if your app addresses that problem but it'd be cool if it did.