Movie Joiner is a simple tool that helps you join several media files (video, sound) into one large one. Files must be in the same format. Movie Joiner works with AVI, DivX, MPEG (MPEG, M1V, M2V, and MP3), Windows Media (WMV, ASF, ASX, and WMA), Real Media (RM), and QuickTime (QT, MOV) media files. You can add and remove files from the file list. Program help includes step-by-step instructions on how to join files.