The original Rollins pass route had a bear in the middle of the woods that incessantly made sounds , I was doing a lot of editing and it drove me crazy. It was a swine to locate, had to delete vast swathes of forest before I could shut it up by deleting it. I also used some stumps , which were accompanied by bird noises . Since I was making a large logging section, I used many of them, had sound turned off in surveyor , went to test route in drive, nearly had my head blown off by the racket made by those birds multiplied by 100 , needless to say, I had to replace them all, I regularly have to go in and reduce wav files by 20 or 30 dB, so many creators don't seem to realise how loud their creations actually are, there's a really nice us truck that makes so much noise it can't be used en route as it's noise can be heard throughout an entire town ....and sheep that can be heard many miles away . It would be nice to have multi track sound editing capability in game...... also, one reason I could never drive diesels for a long distance,or the gas turbines,how do people put up with the noise levels for hours ?