Dolphin, the GameCube and Wii emulator - Forums

In fact, you may only need to use the temporary method I use here (w/o homebrew):

http://forums.dolphin-emu.org/showthread.php?tid=23103

I'd grab the DSP files at the same time if I was doing a temporary hack or wouldn't be able to use the Wii much. Saves hunting for them if you need them (as long as they don't mysteriously disappear like my first DSP dump did).