Hi,
I've noticed that in AA2.11 and previous versions (don't think it's mod specific bug tho), some unit sounds are played at maximum volume, no matter what your zoom level is. It seems to be construction units but I can't tie it down to a particular event. It's the screeching noise that sounds like something has maybe just stopped? It's really annoying when I want to turn the volume down but some units are still ear-splittingly loud. Can other people please verify that this happens for them too?