Action if BGM is missing

[Whisper]

The easiest way to replace background music would to use Text to RGSS to decrypt all the .rxdata files to text. Then you would find and replace your old songs' filenames with the new ones. Then use Text to RGSS to encrypt the text back into .rxdata. Make sure you backup your project before trying this in case things go wrong.

That's interesting :) Thank You, i'll try that :)