Sorry to be an audio geek, but 'normalising' is not what we need here. Normalising means increasing the amplitude of a wave file so that it hits 0db at its highest peak, which would make the sound
louder.
What we need is a simple volume reduction, balancing the levels more correctly.
I've never hunted Troopers much so I never noticed this problem, but I couldn't help but stick my audio-guy oar in
