I have just done a swap of the DTM engine sounds for the Alco DL-109. I don't consider DTM's offering anything like what the 109 originally sounded like. After the swap using sound files from Dogmouse's S2, I find that the volume of the engine sounds is too loud to adequately hear the Leslie from a sound mod I found in the library by an author who only identifies himself as "Drizz". No accompanying info as to who he is. I would like to know how to increase the horn and bell volume or decrease the engine sound wav files. Either way would work. The engine sound file swap did require modification to the 539T Engine sound proxyxml file from the original AP folder from DTM via Steam.
Thanks