First, thanks for your AL1200 driver.
Can you tell me, what did you do with the appleHDA?
It is working for me on Asus P5Q OSX 10.7.1 , but I don't have DTS passtrought.
I have found the hex values 8808EC10 in appleHDA, but it isn't working.
I use DSDT too.
Have you any idea?