Auto extract audio option?

[ECGemini]

First of all, thank you for this great tool, I found it very useful!

I frequently need to extract audio files from the Bilibili MP4, it would be nice to have an option to enable the automatic audio extraction by default, instead of having to do it manually using the toolbox. That way the audio file is always in the same folder as the MP4 after download.

Since Bilibili already separated audio and video files when you retrieve from the source, this should be an easy code change but will provide much convenience for people like me.

BTW, it would also be nice if you can reverse the sorting order of the "downloaded" list, but that's a lower priority ask. Thanks.