Hey Haroldo! This is a really nice tool and I really liked playing around with it! I have some suggestions on how you can use audio within the ROM:
- Build a converter that checks the notes in the audio files and convert it into a format the Master System supports. (For example: "Coin Collected" --> Converter sees notes G and C --> Converts notes to format for the Master System)
- Let the user upload a file format that is supported by the Sega Master System (example: .smps or .vgm)
- Make a music and sfx editor like GBS Music (https://music.gbstudio.dev)
- Make your own SFX and remove the View > Sound tab.