My dad recorded tons of videos from 2002 - 2008. High school concerts, events, etc. The audio is nonexistent on much of the video when I play it back. There are a few fragmented words and sentences, but for the most part, nothing.Really disheartening when I was looking forward to watching my high school concerts again. Watching a choir concert without sound is very boring.Any idea how I could get the audio off of it?