Sound Keyboard Shortcuts

I'm not sure if this is the correct place to post this, but it sort of seems interface related.

I would really appreciate if a keybind option was added to enable/disable Master Sound. I'm forever switching this on and off if I'm watching a film/tv show, etc whilst I'm FATE farming or even sometimes just doing a dungeon and it means going in to the menu and clicking it off/on.

I'm aware that this doesn't really take all that much time, but a simple keybind to toggle it would be really nice. (Ctrl+S) ;)