Hi,
the viewer is looking in the folder of the html file for the xml file by default,
try either to set the path to the xml file or to set the base folder for the flashplayer:
Quote<embed src="bourdel/bourdel.swf" width="940" height="480" allowFullScreen="true" base="bourdel/">
</embed>
Quote<embed src="bourdel/bourdel.swf" width="940" height="480" allowFullScreen="true" flashvars="xml=bourdel/bourdel.xml">
</embed>
best regards,
Klaus