Hello, d24e

The tutorials were at first being encoded with WMF format, then the jump was made into DIVX, however a small percentage of the files still remain with the first codec.

I made a search into Microsoft´s download Database, and maybe you can solve your problem with one of these downloads. I recommend trying first with 8.0 release.

Windows Media Download Center
Remember to check Codecs Installation Package in the Select Download dropdown menu.

Hope this helps mate,