You need to reinstall your DVD decoder. That should fix both issues.

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Chris Lanier
Microsoft MVP - Digital Media
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> i have 2 problems :
> 1- i can't read mpeg video (of my family). WM 9 tells me : windows media met an unknow origin problem. i can't open my mpeg videos.
>
> 2- When i try to open an original DVD, I have video but not audio.