* For setup audio correctly [this](https://mycroft-ai.gitbook.io/docs/using-mycroft-ai/troubleshooting/audio-troubleshooting) was really helpfull
* Trying audio with `audiotest` is VERY helpfull `docker-compose run --entrypoint /bin/bash mycroft` then `./start-mycroft.sh audiotest -l`
* I have pulseaudio on my setup so device index 12 was pulse for me,
then I had to select the correct default device for pulse with `pactl list sources short` and `pactl set-default-source 2`. And device_index is the alsa index NOT the pulseaudio index.