I've worked in the HVAC/ Refrigeration field for 28 years now, No one likes hearing that noise very long.
The new color/style is very annoying. Don't like the junk on the side of the screen either.
The pdf version of these files are available as a link on the same page. It's located on the right side above the brass conversion chart.
MLR manufacturing makes several types of track related tools. www.mlrmfg.com