Where is the executable file that hosts the Command Line Interface of ApexSQL Audit located on my file system?
Go to the folder where you have installed ApexSQL Audit to. There you will find a file named apexsqlaudit.com. This is the console application you call in command line scripts. Note, that there is also a file named apexsqlaudit.exe. Do not use this file in your scripts. This file starts the GUI and you will get an error when you try to run it from the Command Line.