Is it just me and I should get my new Mac Pro repaired or are others having problems getting digital audio from the nMP? I replaced an MP-2009 that was using TOS optical cable to my sound system. Got a toe-to-mini-toslink adapter. Can plug it in to my 2013 Macbook Pro and see the Sound Preferences output screen switch from "Built-in" to "Optical digital-out port"; removing adapter and plugging in headphones switches to "Headphone port". Everything working as expected. However, going to the nMP, plugging in the adapter still shows "Built-in"; while plugging in headphones switches the sound panel screen to "Headphone port". So is my nMP broken and not recognizing the toe-to-minitos adapter? Or is there some other "magic switch" needed to activate the "Optical digital-out port"? Thanks!