With all the media players out there, for this discussion use the shorthand WMP to note Microsoft's Media Player and if you use something else, name it.
Just a FYI!! Microsoft has never taken kindly to "unauthorised codecs" and I've seem some break as WMP is revised. This is why I keep Windows Media Player Classic handy since "I have no cure" for WMP's ills. I'll supply links you can research.
ever since i last updated my windows xp i am having problems loading divx movies on my media player. it is acting quite funny as sometimes when i launch the same movie with another player then media player plays the movie. please help if you know how i could get rid of this problem.