Hello! I actually didn’t, but you’re right, it makes sense to change BGM together with the graphics. So I've made this: https://рпг.укр/плагін/GRB_TitleMusicChanger.js
(I might combine them into one plugin later. Or maybe expand it to cover other types of default audio, like cursor/OK/cancel sounds? Not sure. I'll think about this later.)
I’ve updated the example project and added this BGM change there, too: https://рпг.укр/files/misc/2025/NewGamePlus_TitleChanger_example4.zip
Also, I’ve fixed a small compatibility bug in GRB_TitleChanger (now it has an itch.io page, https://garbata.itch.io/title-changer), you might want to re-download it. Although it's a small bug and you probably will never encounter it.
If you find any problems or need something else, feel free to write
— Dmy