Music in SM64 uses various 'instrument sets', for example an organ for the final boss-fight but also noises like marios fight-noises are an instrument set. New painting for levels without painting, using the question-mark symbol.
This is to avoid issues with unreachable objects. This will allow you to create new configurations for specific romhacks, as well as easily alter properties of the randomization to your liking. Now you can use YAML format style configurations in /Config (see the README.md in this folder!) This update introduces a massive change to how the application is configured.