The PC creates digital Giga data in what format? The Dakota and Sierra Audio Cards then convert that information into what digital format? My MOTU 828 then converts that data into what digital format for the G5 to record or pass through. Only when we want to hear it from the computer does the digital signal need to be converted to analog. If there's so much digital data traveling about, and passing through various converters, why do we need digital to analog converters? I request enlightenment.