Rasp pi plexamp headless makes squealing noise when playing

Plex Labs
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Windows Server Version#:v.1.40.0.7998-c29d4c0c8
Android Player Version#:v.4.9.5
Plexamp Version#:v.4.9.5

I’ve setup a raspberry pi 3 a+ running 64bit raspberry pi OS with plexamp using the guide on howtohifi, but when I play music casted from plexamp on my TV, PC, or my phone it just makes rythmic squealing noise. The first thing I tried was swapping cables, then swapping the speakers. Next I remembered the raspbian command for an audio test, and I could loudly and clearly hear the robot lady calling out the different audio channels. So the pi is obviously able to send out a clear signal to my speaker.

I assume the headless plexamp needs some further configuration, but I can’t find any specific documentation on this site. Does anyone know what might be causing this?

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posting Plexamp logs here (on the Pi at ~/.cache/Plexamp/logs) will give more info about your setup

i have some install and setup notes at link below …

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log.zip (785.3 KB)
Alrighty, now that I’ve had time to get back onsite at my parents place, I pulled and zipped up and attached the logs, I think.
I’ll take a look at your setup procedure now, maybe that will illuminate something I’ve done wrong.

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which audio output are you using? (looks like it’s currently set to default)

recommend selecting the specific device from the headless browser interface (hostname:32500) … go to settings > playback > audio output

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Thanks tgp-2, it was as simple as changing the audio output option to the audio jack. Its working perfectly now, I even ordered a second pi to setup in my Dad’s shop so he can enjoy music from my server there too!

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