I removed AppleACPIPlatform1067.kext and replace your two plist file at Extra folder.
Then rebuild kernelcache (tick at Rebuild cache) with Kext wizard then reboot.
After that It's still not working and sound is also gone -- there is no output device selection in sound system preference.
FYI, I actually did not select sound device during install process. I installed VoodooHDA 2.8.0 by myself after installed MacOSX and I had a little problem which is disturbance sound that always occur during music playing.
FYI, I just realize that my laptop is not even shutdown after put your DSDT.aml in Extra folder.
So I tried to remove DSDT.aml then I can shutdown properly again but It still remain a main problem which is a turn on problem.
FYI, my Extra folder is available and appear in mac os drive.
There are a little files and folder there such as Keymaps, Themes, smbios.plist and so on.
but there is no DSDT.aml. So I copy your DSDT.aml file to Extra folder.
FYI, this my system information, extra folder, /s/l/e folder and EvOreboot.kext file.