Description:
In the original game, sounds are set to coordinates, but these sounds are empty.
In the original source of the description of the sounds, it is marked what kind of sounds should have been there.
Based on this, I inserted the most appropriate sounds in these places.
Market in Chinatown, at Marco's Bistro, at the Port Docks (steamboat horns),
Notification at subway stations, Reloading rocket launchers.
Requirements:
The version of the game is any PC version.

Thanks to Fire_head for the IIITrainAnnouncement.asi plugin
which returns a function of sounds at stations.
Code pulled from ps2 version.

Installation:
Copy content to game and run run2.bat
sfx.raw and sfx.dat file will be edited

sfx.INF
sfx00415.wav 0 212988
sfx00420.wav 0 202070