Dolphin SVN r5555 is released.Dolphin is the first Gamecube emulator able to run commercial games! Dolphin is a great Gamecube(NGC) and Wii emulator.It has a partial Wii support and plays most Gamecube games.

Dolphin SVN changelog:
r5554
debug version of dx9 dll isn't always in the PATH, so you would get an error while dolphin would still load the correct release version of the lib and continue running. so...just check for the release version of the dll.
r5555
Have the AudioUnit callback drive the internal mixer directly instead
of going through an intermediate thread and buffer. This seems to be
how Core Audio is meant to be used, although I still haven't read the
manual.

Indeed, sound on OS X works perfectly now.

Download:Dolphin SVN r5555 x86
Download:Dolphin SVN r5555 x64
Source:Here