Method setMonoMode

include/dsp/midi.hpp:694–699

	}

	void setMonoMode(MonoMode monoMode) {
		if (monoMode == this->monoMode)
			return;
		this->monoMode = monoMode;
		panic();
	}

	void setPolyMode(PolyMode polyMode) {
		if (polyMode == this->polyMode)