Tips: The program allows you to import files from different iTunes library (Default is Movies)
Tips: You can also drag the DRM *.m4v files to the list directly from your disc or other location.
Step 1: Select the files you want to delete.
Step 2: Click the Remove button (Or do this through the menu item File->Remove from converting list), then you can see the files you chose are deleted.
Tips: You can move the mouse to the file which you want to delete, it will show the Remove button, and you can click it to delete the file.