Purchased Vegas Movie Studio 4.0 a week ago. Using mostly common sense and manual, have succeeded in entering and editing about an hour's worth of video from camcorder onto time line. Unfortunately, have found that in several places, sound continues about five seconds beyond end of applicable video. How can I resynchronize video and sound? Can I somehow *un-tie* the two and move sound track only along the time line? Much obliged for any advice!