How can I access audio over Firewire from a DV camera in Flex/Air?

Hi all,
I've scoured the 'net looking, but I cannot seem to find an answer to my question.
I'm writing an app that captures video and audio in Flex as an Air application. I can use Camera.getCamera() to get the video from my Firewire-connected DV camera just fine, but the audio stream doesn't show up in Microphones at all.
I'm developing on Windows 7 - is there some issue with Windows not exposing the Firewire audio feed as a local sound device? Is there a way around it?
Thanks in advance - I look forward to any help you may be able to offer.
Dave

I should note that the camera (both video and audio) show up as devices just fine in other Adobe CS apps (including FLME). Does anyone have any insight as to how FLME gains access to the DV hardware?

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