I just looked over the monza files and onlty see reference to reverb areas and no ambient sounds. I will test in game at some point and check if I can hear it.Just tested on Monza. Then switch to replay and choose tv cam.
I can hear there environment sound like some birds and an general reverberation ( dont know if this is the correct word for that). Some kind a noise of car traffic far far away and so on.
I didnt checked now all Kunos tracks but i guess this is nearly on every track (also on some mod track) present.
This would be cool when it could be added on Bridgehampton
Maybe you need just copy a file...dont know how it works?