Download the Manual http://www.mp3car.com/products/MJS-UAS4%20Installation.pdf Audio Selector Drivers: http://www.mp3car.com/products/MJS-UAS4S/MJS Gadgets USB Audio Selector Drivers v2.02.06.zip Audio Selector Tray application for using the audio selector without a front end http://www.mp3car.com/products/MJS-UAS4S/MJS Gadgets UAS.zip Centrafuse Plugin http://www.mp3car.com/products/MJS-UAS4S/Centrafuse%20UAS%20Plugin%20Setup.zip