I am working on the Training Wall in Gahreesen. I repaired almost everything to get it working on CC, but as you know, when you try to use flymode to go in the Wall area, you crash.
This bug is caused by missing footsteps sounds in the file : "GlobalAvatars_District_Audio.prp".
I first tried to copy this file from an Until Uru version as the Wall was working on it. Unfortunately, then I had a crash in Ahnonay, as Ahnonay and the swimming sounds weren't yet created in Until Uru.
So, I edited the file from CC to have both the swimming sounds and the Wall area sounds. It was not a big problem, I had strange bugs at first but now it is fixed. I don't crash when I enter the Wall area or the swim region of Ahnonay, and I can hear the footsteps sounds.

But there are four more footsteps sounds (they are not in any Age) that are still buggy: you can notice this if you try to create an Age with every kind of footsteps sounds regions in it. They are called: "metalladder", "puddle", "mud", "brush".
I don't know where I can find them to add it to the file, I looked into MOULa, UU, CC, ABM...
Do you know in which game it was supposed to be ?
I have a tutorial explaining how to add the two Gahreesen sounds (called "maintainerglass" and "maintainerstone"), so I'll post it but it would be better if it could tell how to have every sounds...