I've been trying to download a movie from isohunt. I'm using utorrent and its downloading fine but I cannot get it to play. I first tried to play it using divx and got a message saying unsupported format. This video is an unsupported format and cannot be played without installing additional Direct Show filters. I then tried to play the file using VLC and got a message saying no suitable decoder module: VLC does not support the audio or video format "undf". Unfortunately there is no way for you to fix this. What do I do? Please be as specific as possible, I'm new to torrent files.