Get Music and Audio: A User Guide To Better Sound as an eBook in PDF format AND the Blu-ray Demonstration disc. The Blu-ray format allows you to instantly switch between three different mixes of the 12 high-resolution music tracks from AIX Records. You can audition them in 5.1 “Stage”, 5.1 “Audience”, or Traditional 2-Channel Stereo. In addition, the other audio demos are easily accessed using a Blu-ray disc. Requires a Blu-ray player.