Thread:ヌヌハラ/@comment-46261745-20201017193727/@comment-44256294-20201018144518

My understanding is that the looping information is stored in the .bgi file (in SR's case, "Rance7BA.bgi"). So you would need a tool capable of creating/editing .bgi files in order to add new music. Unfortunately I'm not aware of any tool that will create .bgi files from .ogg music files.

When you say you tried to include a .wav, do you mean you just added a .wav file with ALDExplorer? If so, that might be why it doesn't work, since that wouldn't update the .bgi file.

Included in the System 4 SDK there is a program called "WavLinker" which is supposed to create a pair of .ald and .bgi files from a list of .wavs. I haven't tried using it personally but I believe that is the correct way of adding new .wavs to System 4 games. This tool won't work with .ogg though, so you would need to get the .wav files from the original game to use it.