Problem:

The program is working, but I don't hear any jungle sounds.

Solution:
Make sure your sound card is installed and working properly. You can
check the sound from your sound board by using the Sound utility in
the Control Panel. Choose one of the WAV files in the Windows
directory and click Test. The volume of the dialog and the sound
effects can be increased or decreased by pressing the Shift key and
the + or - key. The volume of the music can be increased or decreased
by pressing the Ctrl key and the + or - key. The volume of all audio
can be controlled by simply pressing the + or - key.