If yes try to rebuild your file's index with this prog.: DivFix You can find it here for free: http://www.softpedia.com/get/Multime...d/DiVFix.shtml
(Check the "cut out bad parts" box and hit "Rebuild Index". A new file will be created... try to play the NEW FILE and if it works and you are sadisfaied delete the old one and keep the new one....