The sound of the pieces as they move

I find that the sound of the pieces as they move is helpful, however, on my computer, it seems that only my pieces are making a sound, and often, my opponent has made a move, and I sometimes don't realize  that he / she, has moved, because there was no sound to allert me...Is there for an "adjustment" or can you otherwiise look into thiis problem for me. Thanks      Tom Kane