Automatic selection of audio stream

[Doujingai]

PROBLEM~
Can't get BS.Player to select any audio stream other than English automatically. (Regardless of the file or audio stream language lable)


SYS INFO~
AMD Phenom 8400
ATI Radeon HD 3200
DirectX 10


PROGRAMS USED~
*BS.Player Pro 2.34 Build 980
*CoreAVC Pro 1.8.5
*K-Lite Codec Pack 4.5.3:
w/ FFDshow 2624
w/ Haali Media Splitter 1.9.42.1 (I've tried Gabest 1.0.3.0)
w/ DirectVobSub 2.39


SETTINGS CHANGED~
I've set FFDshow to decode everything except H264.

Haali Media Splitter:
Languages>Audio Language Priority> "jpn,ja"
Languages>Subtitle Language Priority> "eng,en"
Languages>Audio and Subtitle Languages> "jpn,eng;ja,en"

BS.Player:
Video>Video rendering>[uncheck]Wait for vertical blank
Rendering mode: Internal Renderer Overlay
Audio>[check]Use dedynamic filter
Audio>[uncheck]Use internal Vorbis decoder
Audio>Default audio stream> "1"
Audio>Default audio stream (lang code)> "jpn"
Subtitles>Subtitle properties>[check]Subtitles disabled
Subtitles>Vobsub>[uncheck]Enabled VobSub support
Filter Management>[check]Allow intermediate filters

Despite this combination of settings, BS.Player always chooses English as the default language on multi-stream MKV files (though ass/srt subtitles work perfectly). I tested the same files with Gabest to no success. I also tested the same files using Media Player Classic and was successful (Japanese was selected). Any suggestions? Otherwise I'm forced to use MPC for all multi-stream MKV files; that or select Japanese every episode. The files I'm using also have both English and Japanese clearly labelled.
Thanks in advance 8)