There are several DVDs or several Episodes in one DVD. DVD-cloner can detect to list every DVD movie or episode for user to select. And there are sure to be different audio&subtitle in every movie. When you click “customize”, movie-select window will show up, you can select any episode to backup. If you want to select audio&subtitle of every episode at the same time, you must enter audio&subtitle-select window. This time the movie list from audio&subtitle select window is the one selected in movie-select window.