I guess you should edit the file bspfilter.sam (in your bsplayer directory) and uncomment / add the correct lines in it for bsplayer to load cyberlink's audio decoder by himself
I think you'll have to add in the [AUDIO] part
Code:
2000={9BC1B780-85E3-11D2-98D0-0080C84E9C39},CyberLink Audio Decoder