Hello, i purchased a simple, unbranded, usb 7.1 channel audio adapter. I thought it might work out-of-he-box on my pi, but i'm not able to record any audio. I'm trying to setup steven hickson's voicecommand. App, but it doesn'pick up any audio. How do i set up my sound card? The card is almost exact to the daffodil sound card o the verified perepherals page, and i am using raspbian: the may 25th build.