Thanks for reading TC
You can use the WMEncBasicEdit object (part of windows media encoder
SDK) to do that step. MSDN seem to have removed all references to this
in their online documentation, but this example seems clear enough :
http://stackoverflow.com/questions/1386055/split-wmv-wav-file-in-winforms-application
http://www.wmptalk.com/ftopic22388.html
HTH
Cheers - Neil
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Digital Media MVP : 2004-2010
http://mvp.support.microsoft.com/mvpfaqs