Post #2by Wohlstand » 19 Sep 2017, 12:03
Reason of that because is not implemented yet, but will be in next version.
Look:
Legacy SMBX64 standard (SMBX 1.3 and related) doesn't supports custom musics per events. New PGE-X standard will have different events architecture (called "action-style" where every event will contain a list of "actions" to do, which will have custom musics per event.). SMBX-38A standard inherits legacy SMBX64's events archictecture, but extends it with various new features, include change of custom musics.