Sound output only on two channels but system set to 7.1 sound

LabVIEW2011, Win7, Creative audigy 2 soundcard and/or USB sound device set to 7.1 sound
The sound2.llb ... info found the card but only allow to open 2 output channels giving error 4811 when trying to configure for more than 2 channel output.
However the OS audio test 'ping' every speaker
Any hints welcome
I attached my test vi. you will need at least one wav sound file ... (or try to rescue the diagram values... )
It runs with one or two channels but fail on higher channel counts.
Greetings from Germany
Henrik
LV since v3.1
“ground” is a convenient fantasy
'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'
Attachments:
Read wav and play nchannel v2.vi ‏375 KB

Hi Henrik,
what I can recommend to you is directly using the Driver API of your soundcard device if available.
Kind regards
TSP
Kind regards
Tobias S.

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