I have written code for a small microcontroller to do USB AUDIO (speakers) and it works on an XP machine and not Vista or Windows 7, I have narrowed it down to a lot of people online talking about how their USB audio devices all stopped working on Vista and that it was a known fact and had to do with Microsoft DRM, somehow MS does not like the device as it is not seen as DRM worthy. I wonder if anyone knows the exact reason and what you need to add to the USB AUDIO device to make Vista like it? (modify the USB descripto?
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Thanks!