Okay, I downloaded a KVCD MPG file and tried converting it to NTSC DVD format using TMPGEnc Xpress, but afterwords when I author it to dvd the sound is out of sync. It is fine at the beginning of the movie, but it slowly starts getting more and more out of sync, so that by the end of the movie it's about 2 seconds behind the video. Any idea how to fix this? I'm quite a newb to all this.