I noticed some people have problems getting audio working on nforce 680i boards like the EVGA one.
Thanks to the Azalia drivers it was possible to get 2 channels stereo but no input or digital, headphone etc.

Thanks to the hard work of Taruga I managed to get mine fully working, Internal speakers, Headphone, Line Out, Digital Out, Microphone, Line-In etc.

This will work for the EVGA 680I SLI board (and maybe other boards with the same chip) which have the ALC885 chipset with the following ID's:
Vendor: 10EC
Device: 0885
SubSystem: 10ECE601
Revision: 1001

In order to get it working download the Taruga AppleHDApatcher v1.16.zip from:

AppleHDApatcher v1.16.zip

and use my codec dump which I attached.

I am running 10.4.10 with kernel 8.10.1 which might be important if you want to give it a try as well.
The install DVD I used is MacDotNub Mac OS X 10.4.10 V1 R5 which works excellent on my system (thanks Mac.Nub!)
Everything is working except still unable to write to SATA drives. (use IDE or external USB like I do)

Hope this helps you out!
Thanks again to all the people developing drivers and looking for solutions, very much appriciated!

Mike