To get more than 2 channels out of the 828 on my Windows XP machine, I simply type in the number of channels I want to use in that box next to the input sound card in the Media -> Audio Settings dialog box. I access the channels using [adc~ 1 2 3 4 5 6 7 8]. I've also built an abstraction that allows switching between channels without clicking and with low resource consumption.
Cheers
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