Not working for me.

DSDT was patch ok.

Getting this errors in SL

Sep 19 23:31:33 Mac-Pro kernel[0]: Sound assertion "0 == pathMap_aDriverInstance" failed in "/SourceCache/AppleHDA/AppleHDA-174.1.1/AppleHDA/AppleHDADriver.cpp" at line 1459 goto Exit
Sep 19 23:31:33 Mac-Pro kernel[0]: Sound assertion "0 != createAudioEngines ( fPathMap_aDriverInstance )" failed in "/SourceCache/AppleHDA/AppleHDA-174.1.1/AppleHDA/AppleHDADriver.cpp" at line 172 goto Exit
Sep 19 23:31:33 Mac-Pro kernel[0]: Sound assertion "0 == pathMap_aDriverInstance" failed in "/SourceCache/AppleHDA/AppleHDA-174.1.1/AppleHDA/AppleHDADriver.cpp" at line 1459 goto Exit
Sep 19 23:31:33 Mac-Pro kernel[0]: Sound assertion "0 != createAudioEngines ( fPathMap_aDriverInstance )" failed in "/SourceCache/AppleHDA/AppleHDA-174.1.1/AppleHDA/AppleHDADriver.cpp" at line 172 goto Exit
Sep 19 23:31:33 Mac-Pro kernel[0]: Sound assertion "0 == pathMap_aDriverInstance" failed in "/SourceCache/AppleHDA/AppleHDA-174.1.1/AppleHDA/AppleHDADriver.cpp" at line 1459 goto Exit
Sep 19 23:31:33 Mac-Pro kernel[0]: Sound assertion "0 != createAudioEngines ( fPathMap_aDriverInstance )" failed in "/SourceCache/AppleHDA/AppleHDA-174.1.1/AppleHDA/AppleHDADriver.cpp" at line 172 goto Exit
Sep 19 23:31:33 Mac-Pro kernel[0]: Sound assertion "0 == pathMap_aDriverInstance" failed in "/SourceCache/AppleHDA/AppleHDA-174.1.1/AppleHDA/AppleHDADriver.cpp" at line 1459 goto Exit
Sep 19 23:31:33 Mac-Pro kernel[0]: Sound assertion "0 != createAudioEngines ( fPathMap_aDriverInstance )" failed in "/SourceCache/AppleHDA/AppleHDA-174.1.1/AppleHDA/AppleHDADriver.cpp" at line 172 goto Exit
Sep 19 23:31:33 Mac-Pro kernel[0]: DSMOS has arrivedSound assertion "0 == pathMap_aDriverInstance" failed in "/SourceCache/AppleHDA/AppleHDA-174.1.1/AppleHDA/AppleHDADriver.cpp" at line 1459 goto Exit
Sep 19 23:31:33 Mac-Pro kernel[0]: Sound assertion "0 != createAudioEngines ( fPathMap_aDriverInstance )" failed in "/SourceCache/AppleHDA/AppleHDA-174.1.1/AppleHDA/AppleHDADriver.cpp" at line 172 goto Exit

Detected in SL - No sound
Intel High Definition Audio:

Device ID: 0x1458A002
Audio ID: 12
Available Devices:
Line Out:
Connection: 1/8-Inch Jack
External Microphone:
Connection: 1/8-Inch Jack
External Microphone:
Connection: 1/8-Inch Jack
Headphone:
Connection: 1/8-Inch Jack
S/P-DIF Out:
Connection: RCA

Leo - Sound working
Intel High Definition Audio:

Device ID: 0x10438277
Audio ID: 12
Available Devices:
Headphone:
Connection: 1/8 inch Jack
Speaker:
Connection: Internal
Line In:
Connection: 1/8 inch Jack
S/P-DIF In:
Connection: Optical
S/P-DIF Out:
Connection: Optical
Microphone:
Connection: Internal

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Motherboard: Asus P5E-VM DO AMT configured (can be powered on/off remotely) Processor: Intel Quad Core Q6600 @ 2.4GHz GO stepping. Memory: 4GB OCZ - OCZ2P10004GK 1000 MHz; Graphics/Video: Dual Head XFX NVIDIA 7900 GTX 512mb flashed to QUADRO FX 5500(Thanks to Aquamac); Display: Dual Dell 2007WFP & New Dell 2707WFP Main Monitor; Harddrive: (1.) 500GB WDC5000AAKS - (2.)500 GB Seagate ST3500630AS SATA; Optical Drive: DVD DHQ6A1L : Network: Built-in Intel 82566MM running on 32/64.