Semi's directsound3d don't work
 

I have an avi with 2 stereo mp3 streams and I want to play each one in one of the outputs of my SB Live.
I installed Semi's directsound3d to do it but don't work, when in bsplayer I select the option "use semi's directsound" the screen becomes blank and doesn't sound anything (this if the avi has directvobsub subtitles; if the avi file has not subtitles, bsplayer closes itself).

Windows XP, BSPlayer 0.86, athlon xp 1800, 256 DDR RAM, SB Live.