Thanks for the feedback. Feel free to drop an email to hello@traceapp.info if you want a chat. Happy to hop on a call too if you'd prefer.

For the switching, do you mean if you hot-swap during a call? The mic should auto-switch if you've got System default selected, but feel free to give it a go and report back. If it doesn't do what we expect I can absolutely take a look at changing the behaviour.

Learning speakers is also on the to-do list.

P.S. Great choice in test audio. What a banger.