Watch: BB-AHK-Count-In & Start Loop.mp4

If you are running Biab As Administrator:
To run script only .ahk install and set AutoHotKey.exe to Run As Administrator
To run .exe set to Run As Administrator

This uses the system audio for the count-in beeps so if Biab is set to use the same Audio Device, un-check the Always On in Device Driver.
Remove .mp4 and unzip

Download below

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