Download the file & put it where your Stereotool can access it (can be on a USB drive or SSD/HDD).
In the StereoTool window on the top bar, click on the Load button, in the drop down menu click All Audio or All Audio & FM Settings, on the pop up screen pick the file you've just downloaded & click ok, this will have then loaded the new settings.
To save, got to the next button on the top bar that says Save, click on that & on the drop down menu click Save ALL (Export), then on the pop up window, save it where you want to save it & under what name you want to save it as.
BTW, this is using the Windows versions, I think the other versions are much the same though?
Thank you. This worked.