GN Reefer Big Goat - Golden-Age-Rails.com
GN little goat, GN (Blank) Boxcar - RSC Empire Builder DLC
SP Boxcars, Gondolas - DTM Southern Pacific SD45 DLC
Tank cars - RWA tank cars and repaints from here.
I've mucked around with the .bin files so much, I can't recall if the tanks are "re-sound effected" or if they sound like that out of the box, but the SP cars had NO sounds at all and the RSC Empire Builder cars were silent too (or made VERY little sound).
The SP cars had a defined reference to "/Kuju/Audio/RailVehicles/Wagons/Wagon Sound.bin". Well, that file gets replaced by the installer for Krellnut's Freight Sounds for TS2015 and while other cars had the right sounds, these didn't. I discovered that if I put a Krellnut "Wagon Sound.bin" in the "/DTM/SD45-SP/Audio/Wagon" folder, replacing the original and then edited the rolling stock to point to IT instead of the one in the Kuju folder the sounds started working. I conclude that rolling stock in 2017 at least, doesn't like the audio .bin file to be outside it's own directory tree. (yes the path appeared to be correct)
However, while the creaking and groaning and air sounds are all there, the wheels clacking seems to be stuck making a loud bang sound instead...
I was hoping someone would know where those sounds come from.
BTW: If there's some sort of guide to these XML tags, like a reference not a tutorial that tells you how to do one thing, I'd love a link to it. My googlefu is weak...

MSI Gaming 970 (MS-7693), AMD FX-6350/6 Core/3.9Ghz, 16GB Memory, NVIDIA GeForce GTX 1050, Windows 10 Home 64bit
Precision, the quality of being precise...Oh Rly?