Following concerns setting up the driver. I have had ongoing contact with the technical service of Aureon mail. My problem was the configuration of my Win 7 64b sp1, I was too removed from service and system components. Otherwise after a regularization my OS, everything went very well. Proper functioning, a lot of its setting options. Hold tight DTS and Dolby 5.1. 2 channels for film options allow to have a sensation close to a Dolby. Its well taken and improved both on movies and great music on mp3 or AAC for iTunes. I recommend this product very close in sound quality REALTECH HD motherboard, with options and much more on these outputs 7.1. Knowing that I only use the optical output to a Marantz amplifier