If I look up the error code (http://msdn.microsoft.com/en-us/library/ms919477.aspx) it says:

'The source filter for this file could not be loaded.'

So again confirmed that we have a missing codec, or perhaps a corrupted one.

You're using Vista right? (At home right now so don't have your dxdiag here)

Then try this one: http://www.free-codecs.com/download/vista_codec_package.htm

It is a mistake to think you can solve any major problems just with potatoes.
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