When I'm using a tool, and use the bracket keys to enlarge or make smaller, the tool "dings" until I use the tool. It's hard to explain, but for every one time I hit the bracket key, it dings. If I hold the bracket key, it dings, dings, dings. I've tried to disable this for the last 3 upgrades. Very annoying, because the sound comes through my speakers, while I'm trying to listen to music on my computer. Please help!!