Volume Slider For Copper Golem!

Copper Golem makes a lot of loud annoying chest opening noises around the base - please give us a way to lower this volume! Currently the Options menu has a "Friendly Mobs" slider that is effective for other mobs (e.g. Villager, Iron Golem), but because the Copper Golem does not directly emit the chest opening noises it makes, this slider is unable to quiet him. Halp!