Removing tooth-grinding sound

[Dogface]

Hi guys, hope this is the right section to post this in. I'm really enjoying the game and the insanity effects are a big part of that. There's one problem though: the crunchy tooth-grinding noise that starts up when you start to lose your sanity. It really, really gets to me - I guess I have a mild dental phobia - and it just makes it too unpleasant to continue as it makes me cringe too much. Kind of a nails-on-a-blackboard thing for me. Is there any way to disable or replace those specific sounds, without affecting the rest of the insanity effects?

Any help would be much appreciated.