From the diagram it only looks like there is only a pinout for the x-fi I/O bracket and that may or may not be able to use the front panel connectors instead. it would usually say it in the specs on there product page if the card support front panel ports or not
The spdif front panel connections fit into the fatal1ty fine, the extra pins are for the crative specific front panel on the pro version. The pins are labeld on the PCB, just pull out a mag galss and a flashlight .