Update to 10.6.1 then install it.
Section A - Installing 10.6.1 via Software Update
01. Download the AudioKexts.zip file and extract the contents. Inside are three files: IOAudioFamily.kext, VoodooHDA.kext, VoodooHDA.prefPane.
02. Close any other programs and save all work (if necessary).
03. Run the Disk Utility steps from Section B to ensure you don't have any broken permissions or file system issues on your boot drive.
04. Select the Apple pull down menu and select Software Update.
05. Click the Install button to download and install 10.6.1
06. Enter your password to confirm your intent to update. Wait for the update to finish and it will reboot your computer automatically.
07. Once back into your Mac OS, go to Mac HD -> Applications -> NetbookInstaller.app
08. Select the following settings:
* Volume: <your internal drive>
* Install Chameleon 2 RC3 bootloader
* Install Mini9 Extensions
* Generate a system specific dsdt.aml file
* Enable Remote CD
* Fix Bluetooth
09. Press the Install button.
10. Enter your password and press the OK button.
11. When installation is complete, press the OK button.
12. Restart your computer.
13. Once back into the Mac OS, proceed to Section C.
Section B - Using Disk Utility
1. Select the pull down menu Go -> Utilities within Finder.
2. Double-click on Disk Utility.app.
3. Select your boot drive (with the numbers) on the left.
4. Navigate to the First Aid tab.
5. Click on the Verify Disk button.
6. When the pop up confirmation window appears, click the Verify Disk button and wait for the operation to complete. Should your drive need repair, click the Repair Disk button.
7. Click the Repair Disk Permissions button and wait for the repair operation to complete.
8. Quit Disk Utility.app.
Section C - Installing the Voodoo Kexts for Audio
01. Select the pull down menu Go -> Utilities within Finder.
02. Double-click on Terminal.app to bring up the Mac console window.
03. Type the following into the console to show hidden files:
defaults write com.apple.finder AppleShowAllFiles true
04. Click ENTER on your keyboard and the cursor will go down to the next line.
05. Type the following into the console to restart Finder:
06. Click ENTER on your keyboard and Finder will restart.
07. Minimize Terminal.app since we'll come back to this later.
08. Navigate to the folder where you extracted the AudioKexts.zip.
09. Double-click on the Mac HD to open another Finder window.
10. Navigate to /System/Library/BackupExtensions.
11. If you see AppleHDA.Kext then proceed to the next step. If not, move AppleHDA.Kext from /System/Library/Extensions into /System/Library/BackupExtensions.
12. Navigate to /Extra/Mini9Ext.
13. Drag IOAudioFamily.kext and VoodooHDA.kext the folder where you extracted the AudioKexts.zip into /Extra/Mini9Ext
14. Authenticate your intent to move the files when the Mac OS asks for your confirmation.
15. Navigate to /Extra.
16. Double-click on UpdateExtra.app.
17. When the program opens, click on the Update Extras button and wait for the operation to complete.
18. Close UpdateExtra.app.
19. Re-open the Terminal.app window you minimized in step #7.
20. Type the following into the console to hide hidden files:
defaults write com.apple.finder AppleShowAllFiles false
21. Click ENTER on your keyboard and the cursor will go down to the next line.
22. Type the following into the console to restart Finder:
23. Click ENTER on your keyboard and Finder will restart.
24. Quit Terminal.app.
25. Navigate to the folder (or Finder window) where you extracted the AudioKexts.zip.
26. Double-click VoodooHDA.prefPane to install the audio pane into System Preferences.
27. Confirm the pop-up window with your intent to load the Voodoo preference pane.
28. Run the Disk Utility steps from Section B to fix the permissions on your boot drive.
29. Restart your computer.
30. Once back into the Mac OS you will now have working sound. To get a working microphone, proceed to Section D.
Section D - Enabling Microphone
1. Open System Preferences.app from your Dock or Applications folder on your Mac HD.
2. Open the VoodooHDA preference pane.
3. Select the Microphone from the drop-down menu on the left.
4. Drag the Recording Level slider to 50%.
5. Drag the Monitor slider to 100%.
6. Click the Show All button to return to the System Preferences.
7. Open the Sound preference pane.
8. Navigate to the Input tab.
9. Drag the Input volume Microphone slider to 50% and you are done!
Please note that you will need to reconfigure the microphone each time that you restart the computer.