You have to first download and then Extract the files using some other program such as winzip. Otherwise you get the Instalshield failure every time. After you extract the files, they are then broken down and you can find the audio drivers folder.
As of March 2020 the wdm.inf file is not there but just click on the install program that shows up in the DriversWin10 file and use that instead. The program in plain white box says do you want to replace your wdm drivers and you say yes. Then you must
reboot. You may get an error saying it did not work. But it worked for me.