I am happy to have received a reply despite your busy schedule. Regarding the BGM issue, you mentioned that this behavior is not by design, so I tested it again using “Actraiser - Fillmore.vgm,” which is used in the sample program. As a result, the track looped correctly when played with the “music” command.
Is it possible that, even within the same .vgm format, some files do not loop? For example, none of the tracks from the following collection published on itch.io looped when I tested them:
https://safetystoatstudios.itch.io/free-vgms






