I guess this might be a Windows-only issue. When specifying an audio device via the config file, setting audio_device = “0” plays audio to the default audio device, instead of device 0.
Here’s a list of my audio devices:
If I specify audio_device = “2” it will play audio via HDMI to my TV for example. However if I specify audio_device = “0” it will send audio to device 7 instead of device 0, since 7 is currently set as the system default.
(app used to list audio devices is AudioSwitch)