it is pretty simple: does not play alarm sound file under conditions:

else
        print("You Busted!")
        alarm()
        stop()
    end
the file is 00:00:00 of length and only 14.1 kb in size
when trying to substitute with another sound file - nothing..
what to do?

Go to view->settings and ensure the correct file is selected for the alarm sound. iirc the file has to be a .wav or .mp3. No other sound file will be playable.