check for currentIndex fails when zero (boolean)
check for currentIndex fails when zero (boolean)

billappleton/dsp-core,neroxing/dsp-core,neroxing/dsp-core,bbreck3/dsp-core,bbreck3/dsp-core,bbreck3/dsp-core,neroxing/dsp-core,neroxing/dsp-core,billappleton/dsp-core,billappleton/dsp-core,billappleton/dsp-core,bbreck3/dsp-core