[Obelix]

And hello again, TheDarkWraith
I want to put the puzzle before you, it concerns the sound of diesel engines.
Can you make an extra controller, which will receive signals from the engine telegraph and post-processing of signals received from the telegraph to issue a command to launch the audio file corresponding to the current turnover of diesel engines? Stock sound file can be replaced by zero, or disable it in Sh.sdl. I'm sure so you can solve the problem of changing the sound of diesel engines is not on the volume. So it is possible to realize the adjustment of the sound frequency.
What do you think?
Perhaps it could be some sort of additional scripts.
In general, I imagine it like this:
need to write a script that will intercept the command of throttle and convert them into commands to start the necessary audio files. But it already you know best how to implement it and whether it is possible (I am sure that is possible)