I'm using an EP45-UD3LR. It uses ALC888 too...
I'm not sure... I'm currently using a Geforce 7900GTO card, so I'm stuck on 32bit. Gonna order a GTS250 tonight though I think, so I'll find out soon :-) If you find out either way, let me know.
For what it's worth, I've heard there are 2 versions of Disabler out there - one of which won't run in 64bit mode. If anybody can find the one that runs in 64bit mode (or the source code), I'd like to have it.
I can try I guess. What does that kext do exactly?
EDIT: Actually... I'm not so sure I can help you here. The kext doesn't load on my system. I would probably have done what you described in your post. Unfortunately since my system doesn't load the thing, I can't test it out :-/
For what I've been following since past couple of posts,
I don't know if you have tried this or not.
In Snow Leopard 10.6.x, either ways, if you do want to work in 64-bot mode, and AppleHDA.kext is not a working driver,
then most probably, the next best alternative is VooDooHDA.kext.
Since, there can be only one HDA.kext controller, as I'd read in a previous thread here and where VooDooHDa is being developed by Slice,
Why not try actually moving the original AppleHDA.kext from /S/L/E to another location like how I usually do, when trying new stuff.
maybe move the AppleHDA.kext to /Volumes/your-snow-partition-name-here/Disabled/Orig_Xtns/
That way you have a safe copy, and can work with other files, without trouble.
I found this out when 10.6.2 caused problems with VooDooHDA.kext.
Try it and report. Moving the AppleHDA.kext out, and then using the VooDooHDA.kext, should get it to load and at least give you stereo (2-front speakers) output.
Rest, node pathcing using info.plist file in the VoDooHDA.kext,is something that remains to each unique Audio Chip.