Can't fast forward WMV files

[mugs]

I've got some Microsoft Livemeeting Webcasts that I wanted to download and watch locally rather than watching the streaming video. I downloaded them, but when I watch them in Media Player I can't fast forward or jump to a different position in the video... I can only watch it straight through from beginning to end. What's odd is that I CAN change positions if I watch the streaming video in my web browser. What's the deal?

The webcasts are available at http://www.microsoft.com/seminar/events/default.mspx

Thanks

 

[Beau]

Usually that means that the files are incomplete.
Could try to re-encode them to fix them..