I just bought Toast DVD from the App Store. I burned my first DVD (DVD-Video, not Blue Ray or HD-DVD), and when I play it on either my Mac or standalone DVD player, the audio and the video are out of sync. I'm taking video from a single m4v file on my hard drive, which plays without incident on the computer. When I drop it into the program and go to "Edit," I can watch the movie in Preview and everything looks perfect. But for some reason, once I click Burn and view the completed disc, the sound and video are off. I imagine it's something in the burn settings rather than with the file, given the above description. Any thoughts?