Not sure how to keep the sound with the avi files when I copy them to my PC. This camera was given to me without any software or cables so I've just been coppying the files via a CF card reader. Why I try and play the avi there is no sound. Do I need some specail codec or software to get the sound? There is a tiny THM file made with each AVI, but have no idea what to do with it. Any one have any ideas?