[sound effects fix!]
Here's how to get the sound working. If you look in the DATA folder in the game's directory, you should see, among others, folders named SOUNDS, SOUNDS8 and SOUNDS16. SOUNDS8 and SOUNDS16 contain the game sounds in 8-bit (low quality) and 16-bit (high quality) .WAV formats respectively. SOUNDS is where the game actually reads its sound files from - but at the moment, it's empty apart from four (common?) files. What you need to do is copy the contents of one of the other two folders (ideally SOUNDS16, but if it doesn't work try SOUNDS8) into the SOUNDS folder, and your game should now have sound!