It's probably a codec problem. See link below. Has a lot of great info.

CODECs list for Movies/Audio/ Alternate players / Video help forums/ video-mp3 fixers

Also might take a look at VLC Media Player, has codec built in, and will play most anything.

VLC media player - Overview.


And lastly, ALWAYS use Bitzi when searching for Video Files.

How to find music (tips for video also)

Hope this helps.

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