How Can I select an Audio Hardware with AudioQueue ?

Hello,
Apple is providing this Demo Code...
http://developer.apple.com/samplecode/AudioQueueTest/AudioQueueTest.dmg
but how can I select the Audio Hardware? I want to write an application that should output to 4 different USB Audio Cards. Is that possible?
I am searching for hours now
Thanks,
Klaus

I confirm your issue as I just tried an audio CD in my XP laptop. "All Files" showed only the 44 byte .cda files and no others. QuickTime couldn't open them (error -2048).
I also tried "Open File" with version 7 Pro and it couldn't open.
Odd that I get the option to open using iTunes and it opens and plays just fine. Since iTunes uses the QuickTime engine I would have thought QuickTime could read the files directly.
The same audio CD inserted in my Mac allowed me to double click any track and it opened directly in QuickTime Player. The files show as .aiff files measured in MB's.
Windows users could open an audio CD in iTunes and then convert to .aiff (no compression) and then open the .aiff in QuickTime.
I guess I should have tried myself before getting your hopes up. I apologize.

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How Can I select an Audio Hardware with AudioQueue ?

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