I have not used the GPL soundplayer for ages. Isn't this tool simply for comparing sounds?
I notice I am getting old.
Maybe you're getting old, but you're right. Lee's GPL Soundplayer is mainly for comparing the sounds. But you can create
your own Soundsets and load them via GPL Soundplayer into GPL. (For example: GPLEA Soundset, Ducwolf Sounds, Speed Eraser Sound) and so swap easily and wiithout renaming any files between them.
GEM+ was (or is?) able to give every car in every carset its own sound, I'm not sure whether this feature is gone to hell with the 67patch, will
have a look this evening and report here ...
GEM has an "Apply Soundpatch" option, but never has, afaik, had any means of manipulating individual sound files.
In recent versions of GEM (Since 66 mod approx) the "Apply Soundpatch" has been very puzzling. Long story short, you do not seem able to run GPL through GEM without the additional sounds required by the sound patch, whether you have the apply patch box ticked or not.