using optical out on ALC883

[omri]

hi

i'm trying to use my computer as media center

i want to connect it to the receiver with a optical cord

i install leo4all V3 (10.5.2)

my system configuration is:

Gigabyte GA-965P-DS4 (ICH8R + ALC883)
2Gb RAM
Nvidia 7600GT
intel E6600


is there a driver that can help me ?