Flac audio files output as stereo (log attached)

i cannot seem to figure this out. all of my flac audio files are being played as stereo.

i have a 5770 sapphire ati radeon hd gpu with the latest drivers.
i'm using the amd high def audio drivers
i have amd hdmi output configured as my default audio source in windows 7 x64
both audio output and passthrough output are set to wasapi amd hdmi in xbmc
i have my speaker configuration set at 5.1 in xbmc
dolby digital capable receiver and all other capable option checked in xbmc
my htpc and toshiba LED are both connected to a denon 1909 receiver via hdmi

here's my log file:

http://pastebin.com/qzEVz99x

thanks for any attention and help you can bring to my problem

Regards,
Mark