After the unpackaging started, I was told I could not access various files...

[tal2masn]

Translated and questioned using deepl. Sorry if there is any difference in content

[alexpado]

Hi.
Please make sure to have the wrappers folder in the same folder as the .jar file.
If you don't have the wrappers folder, please re-download the .zip file from the release page

[tal2masn]

Thank you very much!
Resolved.
Is SFX not decompressable?

[alexpado]

The default configuration of the application do not allow for it, because as the name suggests, it is only for music.

However, if you really want to, it is not that hard to edit the code to make it work with any file. Watch out though: The extraction will take a lot of time and disk space.

[tal2masn]

Thanks for the answer! Understood.
I love the sound effects of mihoyo's games, so I would be awesome if you could do it!

[alexpado]

I just released the version 1.4.2 which allows you to extract any file you want. Please refer to the README file for usage.

[tal2masn]

Ohhhh thank you!
You're the best.