It is quite simple.
Sapphire112 has provided a DSDT, a audio (HDA) kext , a USB kext, plus his extra folder. (tutto = everything)
If you system is stable, then you don't want to simply copy his entire extra folder, which includes files specific to his hardware/install SO:
1) Simply copy the Sapphire's DSDT to your own extra folder
2) Run latest Multibeast and install Generic/Universal USB 3.0 Kext, OR
2b) place the GenericUSB kext on your desktop
2) place Sapphire's HDA kext on your desktop
3) Run KextBeast to intall the kests
4)repair permissions
WORKED like a charm: VIA Usb working and SOUND!
If your sytem is unstable as a whole you might want to simply copy his entire EXTRA folder... but a clean stable install would probably be worth the effort if you've screwed your system by too much experimenting.