Newbie Question about hooking up Live

Hi sorry but this is a totally newbie question. I have a Sound Blaster Live card and there are 2 outputs for hooking up to speakers. I am a bit confused on which one to use. I have a 5.1 speaker system but the jack to connect to the sound card is only one jack. The sound card has 2 connections 1 for front and 1 for rear(correct?) Could I just put this one jack into the main connector of the sound card and be done with it? Or will I need to hook up speakers to this second connection to get rear sound. Any help would be appreaciated.
Thx in advance.

If your speakers are miniplugs (looks like a headphone jack on the end), you will need to put it in the orange input on the far left (If you are facing the back of the computer). Then, click the little red plus sign directly above the main volume slider, then select digital output only.

If it works for you then don't fix it.

Hi, thx for responding. What if when I check that Digital check box and the music mutes?