For its most accurate audio emulation, Dolphin does require a DSP (digital signal processor) dumped from a Wii downloading that is illegal, but dumping it from your own modded Wii is perfectly legal. It’s written by programmers like Fiora, and none of that code belongs to Nintendo. The code of the emulator itself is completely legal. If you don’t closely follow the emulation scene, you may wonder why Nintendo hasn’t shut down the Dolphin project.
