Add custom priority list for audio input/output devices

[khaotisch]

Hi, I’d like to suggest an improvement for how the app handles audio input and output devices.

Currently, the app seems to follow the macOS system audio settings. This mostly works, but it can become unstable when devices change, for example when I connect or disconnect AirPods, plug in earphones, switch speakers, or when macOS automatically changes the selected input/output device.

The result is that the app can unexpectedly “jump” to another audio device, depending on what macOS currently decides is active.

A better approach would be to allow users to define a custom priority list for audio input and output devices inside the app itself.

The app could then always select the highest-priority available device, instead of simply mirroring the current macOS system setting.

This is how Spokenly handles it, and it avoids the problem quite well. The user can manually define their preferred input/output device order, so the app behaves predictably whether AirPods are connected, disconnected, or macOS changes the system-level audio device.

The main benefit would be more stable and predictable transcription behavior, especially for users who frequently switch between AirPods, wired headphones, external microphones, monitors, speakers, etc.

Suggested behavior:

Add an in-app priority list for input devices.
Add an in-app priority list for output devices.
Automatically use the highest-priority device that is currently available.
Fall back to the next available device if the preferred one is disconnected.
Avoid relying only on the current macOS system audio setting.

This would make the app much more reliable for users with multiple audio devices.

Thanks!