I had mpd running happily and listing my directory of music, but I couldn’t get any output from the hardware. After spending a few hours chasing my tail I thought I’d leave a note of my steps:
Thanks. The running mpd in foreground mode is very helpful for debugging.
On another note, this is an amazing piece of hardware. I’m playing some B. Dolan and Run the Jewels and hearing stuff in the production I’ve never noticed before, and the bass is SO clean. Well done team Khadas