[PROBLEM] Airplay No Sound Output

[Tim Curtis]

It is unknown to me while it would eventually play sound; but Airplay's volume is controlled by the Apple device's volume...
Try to check that out, first.

Yes, validated volume is up.  Also to note is I have installed RoonBridge and Plexamp. Is it possible that these services could interfere with audio output even if they are not outputting anything?

Yes, both acquire the ALSA output when they start and don't release it. IIRC Plexamp will release it after the first playback session. Something like that.

ETA: From the Renderer Setup Guide.

Code:

These audio renderers try to acquire exclusive access to the audio device
when they are turned ON and thus no other renderer can be also be ON.

- Squeezelite (if -c <timeout> option is not specified)
- Plexamp
- RoonBridge