I included the AHK script as well as compiled exe 32 & 64.
If you run Biab as admin do the same with the exe,
if you are running the script go to AutoHotKey install folder and set AutoHotKey.exe to run as admin.

Disable count-in see pic
type tempo in then click Set Tempo
type time signature the click Set Time Signature
This works with the Windows audio device
so if you have set your audio device to be "Always On" it won't work so un-check that in Audio Settings.
Download Biab Count-In-AHK.zip.mp4
remove .mp4 from file name.
EDIT: Updated for /8

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Biab-Count-In-AHK.png (7.2 KB, 209 downloads)
Count-In_Settings.png (29.87 KB, 209 downloads)
Biab Count-In-AHK.zip.mp4 (984.1 KB, 89 downloads)