You might need the Audio Drivers for the DivX player. If you have the Audio Drivers and still have no sound (which happens sometimes) you can play the video in an alternate player. I use
VLC Media Player. To get it to play in the VLC Media Player, once the video is playing follow the steps below:
1. Right click on the video and go to Preferences
2. Click on Download Cache Tab
3. Click on 'Open cache folder' button
4. Double click and open the file inside this folder that you are trying to watch.
5. When the video is loading it may ask you to 'repair' the file. Click Yes to repair.
6. Grab a soda and snack, enjoy your video.