Forgive me if this has already been answered somewhere else...

I have a few downloaded Xvids (3 to date) and they play perfectly in windows media player for exactly 6 minutes and then the sound goes silent. Stopping the movie and restarting it doesn't restore the sound, but closing the media player and restarting it does. Hence to watch the movies I have to restart WMP every 6 minutes and FF to where I just was ! If I try to play the movies in DivX 2.0 the sound is all scrambled and if I make VCDs with nero from them the sound is absent for the whole movie. I have lots of other movies in various other formats and these all play fine. Any suggestions ?

Fash.