“edit” I’m a relative begi

“edit”

I’m a relative beginner using Vegas studio 9 platinium pro pack. I’m unable to get any sound from AVI’s recorded with a helmet camera. Sound (and video) works perfectly with Movie Maker. Windows media player.

Or can someone recomend the best way to convert files into something Vegas can use without losing quality? Even if I have to purchase sotware I’d like to maintain as higher quality as possible.