Also, is editing being discussed here?
Yep, occasionally. But mostly, when someone makes something interesting, he just posts it here. For example,
http://www.sukhoi.ru/yabbattach/invasion.rar
http://www.sukhoi.ru/yabbattach/VIZOV.rar
- these tracks are edited. Also you can look here
http://il2.sukhoi.ru/tracks/index.shtml
but there are just interesting tracks, many of them not edited.