Well, I am stumped. When my helix is hooked up to usb I get no sound from spotify, etc from the laptop. HX edit works fine but if I flip over to spotify to work on a song and play along-nothing. Rebooted PC, rebooted Helix, still no music (up to date through 2.71). My backup Helix runs 2.7 and no problem with running spotify, switched usb cables, ports etc, nothing in 2.71.