The sound in the Vietcong game does not work.
According to our experience the sound did not work when there was used the older CMI sound card in Windows 98. The problem is that after starting the game, the sound automatically turns down to minimum volume. Solution: Run the game. In the menu, press and hold the left Alt key and then press the ESC key - this is a combination of keys that takes you back to your desktop. Double click the left mouse button on the loudspeaker icon in the right bottom corner of the screen to open the volume controls. Now you can modify the volume. By dragging the scroll bar up for Master Out you will retrieve the sound in the game.