Are you sure these are AVI files? If yes, then it's probably wanting to find a codec. Try VLC - (click on link) _ (choose nearest mirror site) which has in-built codecs & will NOT react to links within files. But you may need to change the default program of opening of video files to VLC; Setting Default video app

But please answer Sleepless's questions so we can find out more about this problem to help you & others.