McSnurtle/voip

AI Summary: The `microphone_id` configuration setting is not being utilized in the `client.py` file. This is because the `pyaudio` recording logic within `client.py` does not implement the `input_device_id=` parameter, causing the system to always default to the primary microphone instead of the configured one.

AI Summary: This issue is a feature request to implement the ability for users to select their preferred output device, such as audio speakers or headphones. The goal is to provide user control over where the application's output is directed, moving beyond a default or fixed device.