Mute Game When Unfocused Option

Not really a bug I know but hoping to bring some attention to this small thing I added a feature idea for it awhile ago. https://ideas.captain-of-industry.com/suggestions/544904/mute-game-when-window-is-not-focused I would really like to have this option added to the game settings to mute the game when it is not the focused window. This is a pretty standard setting in most every game I've played and hopefully a small thing to add.

I keep forgetting to suggest this, so it's good to see the suggestion already made.

Now, with a new update, would be an excellent time to add it, since there'll be some messing with the code anyways during bugfixing and optimization.