Allow Configuring Custom Audio Encoder

First of all, I have only just begun trying out Captura. And so far, I think it is a great front-end for screen capture with FFmpeg. Thank you very much for this great software.

I would like to be able to customize the audio format & settings when I create a custom codec in Configure -> FFmpeg -> Configure Codecs -> Custom, just like can be done in the Args field for the video encoder. Or, just be able to disable the Audio Format field so I can include the audio encoder options in the Args field.