greenflash
100+ Head-Fier
The thing is I was trying to get airplay to sent my iTunes music from my iMac to my M6 just the way I send it to my Yamaha receivers that have Airplay. Cant figure out why else airplay would be on the M6.
An update, @mattg3 and @FiiO. I upgraded to the last High Sierra (10.3.6, with Airplay 2 support), and the latest iTunes.. but not sure that was the problem.
@mattg3 try to go to Sound in System Preferences. Then if the Fiio Music Player is there you can select it. It will stay grayed out and with the exclamation mark in iTunes but.. it will work!
And sounds excellent