MixPad Music Mixer Free for Mac MixPad Multitrack Music Mixer and Audio recording; XTrem Audio Unit xTrem Audio Unit 1.1 is developed to be a fun tremolo unit; Zulu Free DJ Software for Mac Zulu Free DJ Software for Mac is the complete DJ software. Logic Remote lets you use your iPhone or iPad to control Logic Pro X on your Mac. Use Multi-Touch gestures to play software instruments, mix tracks, ..