well i'v just tried what you told me, but the sound still doesn't work, and the Apple AzaliaAudio.kext errors keep on coming when it boots.
when i put the first line on terminal (sudo chown -R 0:0 *) it ask me for a password, and when i write it i can't see it, is that allright?
i'm doing it right or i have to do something before, like using root user?
should i do something to Apple AzaliaAudio.kext ? what does the -f mode change?