Minor Annoyance - AME 2019 beeps and boops at me

Hello! I realize in the big scheme of things this is a tiny little problem, but...

Since upgrading to AME 2019 a few weeks ago, the Media Encoder beeps and boops at me three or four times when encoding a file. No warnings pop up, there's nothing wrong (that I can see) with the files, but as I mentioned I get three or four warning "bonks" every time.

I've checked my preferences like thirty-twelve times trying to find a way to stop the audio alerts but I must be overlooking something...

It's a minor thing, but it's annoying enough for me to want to make it stop. Does anyone have any ideas?

I'm on a Mac, running Mojave (10.14), 32GB RAM, using the latest updates of 2019 Adobe CC software.