After a certain time, I want to turn off audio_service in the background with the android_alarm_manager plugin

flutter dart alarmmanager backgroundworker flutter-dependencies

You have the right idea, although you have to wait until it is actually connected using "await":

await AudioService.connect();AudioService.stop();

For this to work, you will also need to upgrade to release 0.9.0 or later which mentions in the CHANGELOG:

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