Aaron,
This is the USB card http://www.amazon.com/Zalman-ZM-RSSC-External-Sound-Card/dp/B0001OZ2K8
It converts USB to its 5.1 analog speaker output ports, and it also sends the 5.1 audio over a coax cable to your receiver. It is an awkward device requiring a lot of fooling with to get it right (hint: do not install its driver, but let Win7 install its driver), but it can somehow get 5.1 out of Netflix and VUDU. I don’t see anything about DD live on its configuration or documentation, so I assume that is not part of it, but don’t know for sure.
