I was being lazy when I got this working and just dropped these (Legacy889HDA.kext & AppleHDA.kext v1.7.9a4) in cos they were working in SL 10.6.7. Thats for ALC889 on my GA-X58A-UD3R. Gives me optical and digital (pcm 2ch) output, no hdmi audio. http://www.sendspace.com/file/6qgche
Thanks, didn't even think of using 10.6.6's AppleHDA reusing my old LegacyHDA too got 5.1 working.
Also, unintentionally I left Lion running overnight and since then I haven't got the double fault panic with Chameleon, so maybe it's related to cache/metadata generation or something. At any rate having correct SMBIOS data instead of the half-assed stuff [url="http://www.insanelymac.com/forum/topic/279450-why-insanelymac-does-not-support-tonymacx86/"]#####[/url] gives is nice.