@hiawathmr, the sound files are an easy fix. Use freeware Audacity, open the file, select all, go to Effect - Normalize, and make sure "Remove DC Offset (center on 0.0 vertically)" is checked. Then just export back to the original file name (save as would save it as an Audacity project, which you don't want). Done. I could do them and send them back to you if someone could upload the assets with the fixed audio files.