This is a little project I started a few months ago. Started poking around the sound ROMs and discovered how easy it is to customize voices, sound effects, and musical instruments. I'm finally finished with it! The main goal was to improve the voices (and mute some well-known annoying ones) and improve some sound effects and the music to make everything sound less synthesized and more realistic.
The funny thing is as much as Brian Schmidt advertised the BSMT 2000 sound system to be superior to all other offerings, a lot of sound effects and instruments were still synthesized. I was surprised to find out that these were actual sound samples stored in the ROMs rather than synthesized sounds produced in real time. That was a big missed opportunity as Williams was still using fully synthesized music at the time. For example, the opening guitar riff in the C&C MF background music.
Because this is a custom ROM mod I have no idea if it will actually work in real machines. The game (or at least the sound board) may refuse to boot due to a checksum error. But I don't know if the DSP checks the sound ROMs on startup. I'm guessing it doesn't given the very fast startup time. List of changes is below including a demo video and download link.
I'm impressed -> Hey, that's good work
Here comes trouble -> I'm Chaos, he's Mayhem
You blew it -> Wait!
They got away -> Phooey!
I got a bad reputation -> Gunfights, explosions, sharks...
He's getting away! -> Grab the cat!
You have no authority -> That's not what I'm thinkin'
What Leo wants -> I owe this guy one
Leo Getz -> Gimme something to do
Ho -> Moo
Police officer! -> Will ya shut up?
Get the bad guy! -> Drill him! Get outta the way!
Loaded -> Step aside
Nice shooting -> Have a nice day
We're back in action -> Don't eat the tuna
Ok, ok, ok
To apply the changes to your u17 (lw3u17.dat) and u21 (lw3u21.dat) sound ROMs run the program included in the zip file and apply the ppf patch files to each original ROM file respectively (load the ROMs in place of "ISO" in the program, you will need to view all file types to make them visible). The version I used is 2.08 but I don't think the sounds were updated between code revisions anyway.