I've been using a Mac running Sierra with an Airplay 2 capable Denon home cinemas amp for several months without any major problems.
After upgrading to High Sierra I've run into two VERY annoying issues:
- Whenever I switch audio output from internal speaker to the Airplay amp and then hit play in a Youtube video or other video player iTunes starts instead of the video playing! I have to quit iTunes and hit play again before it actually starts playing
- Whenever playback starts all open network connections drop.
Does anybody know how to stop iTunes autostarting when I switch to Airplay as the output device, and how to stop the connections from dropping? Neither of these things happened in Sierra.
EDIT: I tried getting a list of audio devices and AirPlay doesn't show up at all.
system_profiler SPAudioDataType Audio:
Devices: Built-in Output: Default Output Device: Yes Default System Output Device: Yes Manufacturer: Apple Inc. Output Channels: 2 Current SampleRate: 44100 Transport: Built-in Output Source: Internal Speakers iShowU Audio Capture: Default Input Device: Yes Input Channels: 2 Manufacturer: shinywhitebox ltd. Output Channels: 2 Current SampleRate: 44100 Transport: Unknown Input Source: Default Output Source: Default Stream/Record: Manufacturer: Apple Inc. Output Channels: 2 Current SampleRate: 44100 Transport: Unknown Output Source: Default
However "Denon AVR-6400H" shows up as an available output device in the audio prefs pane and in the icon menu options.