Unable to play more than 2 audio channels !

[hpeters]

When playing divx movies with 4 channel audio the front channel audio is just
duplicated and played in the rear channels instead of the surround sound rear audio.
These same movies play with all four channels using Zoom Player 2.70. But
I like BSPlayer much better overall.
Also it doesn't matter what type of audio it is AC3, Ogg etc.
The sound card used is a Creative Sound Blaster 5.1 with the latest drivers.
And the OS is Windows XP.

Harley