UPDATE for 10.8.x:
seems TonyMac has changed the naming of the kexts in Multibeast:
Drivers & Bootloaders -> Drivers -> Audio -> Realtek ALC8xx -> Without DSDT
only one checkbox to tick (the ‘ALC888 – Legacy’ one for my motherboard – HW revision 1.0)
For 10.7.x
after kakewalking, get Multibeast and install:
and only these! :)
See “sleepEnabler” for how to get it to sleep