your flash header source path on single page is wrong try used full URL
find in header.php
<object width="841" height="82" align="top" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000">
<param value="../../../fla/blogheader.swf" name="movie"/>
<param value="high" name="quality"/>
<embed width="841" height="82" align="top" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" quality="high" src="../../../fla/blogheader.swf"/>
</object>
replace with
<object width="841" height="82" align="top" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000">
<param value="http://wearefuckingawesome.org/fla/blogheader.swf" name="movie"/>
<param value="high" name="quality"/>
<embed width="841" height="82" align="top" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" quality="high" src="http://wearefuckingawesome.org/fla/blogheader.swf"/>
</object>