Yeah you can preview the movies but you will need to download some programs. go to http://www.divx.com/divx/ and download the program divx player. Now after you download it open the divx player and click on the eject\open button search for the folder that you have your incomplete files in (it should be in the same folder as your downloaded files. Now in the incomplete folder click on the movie you wish to preview it. If this player doesnt play the file download K-Lite Codec pack from http://www.k-litecodecpack.com/ and open the media player classic