Hello, sorry for the late reply. I had forwarded your message to my coder and forgot to come and reply.
The coder told me that he had locked everything because he hadn't thought about the music. I've asked him to fix it for the next update, which shouldn't be too long now.
In the meantime, the easiest thing to do is to look for an 'RPA extractor' and you'll have all the folders displayed in the game folder.
Thank you for the list :)