Did some researching and apparently if you want to have digital outputs to a 5.1 capable receiver, you need either a TOSLINK-to-minijack (3.5mm??), or 3.5mm-to-RCA for digital output on all LIVE cards.
Also, the Live Drive outputs, SPDIF/Coaxial, and TOSLINK/Optical do NOT support digital output as the 3.5mm mini-output on the back of the LIVE sound card. Someone correct me if I'm wrong on this.