Read this thread...about halfway down is a pinout guide made for someone to hook up the older Live breakout box to a ZS.
http://www.driverheaven.net/archive/index.php/t-51678.html
Also found this is another forum:
The Pin-out on the Audigy 2 are as follows
1 - Analog Ground
2 - Analog Headphone Out Left
3 - Audio Backpanel Mute -- short to ground to mute the backpanel (when headphones are plugged in)
4 - Analog Headphone Out Right
5 - same as #3
6 - Mic input from front panel
7 - key pin (shouldn't be there)
8 - VREF out -- voltage reference for Mic
9 - MIC IN MUTE -- ground when mic isn't plugged in, +12VDC when mic is plugged in
10 - Audio cable detect -- will be ground when headphones are plugged in (not normally used)