Wow. Just wow! This topic is soo important!! It's a sound editing tutorial for pros
:D I thank you so much for your time you spent into this.
There is a VIV Editor especially made for NFS Hot Pursuit 2. Now there's only missing a .bnk editor that can recognize NFS 3/4 .bnk files.
But i'm not quite sure about when the click is added. I always thought that the click is added when opening a .bnk file in NFS Wizard? I think this click is very similiar to the clicks you can get when you record your PC audio that the soundcard makes and when the CPU is working very hard, you will also get those clicks in your recorded audio at those points in the audio where your PC worked hard.
The click is expanding itself into every other sample. I can only explain it like that: The click is pushing all the samples out of their position where they have to be, so that the click has it's own position in the .bnk file at the very start. It's actually like a frickin' virus
It deplaces all the audio files, corrupting them, destroying loops and representing itself in every sample.
I will try your tutorial with them silence parts, i hope this helps. MADMAN_nfs mentioned in another tutorial, that it makes a difference if your game is set to EAX mode or Stereo mode. I myself can only find stereo mode and mono mode in the audio settings of the game. But maybe this is an option for you.