You asking a lot for music, so i try to understand Trackers and it seems like there is a limitation on it. The 64-bit can only work on 64-bit and 32-bit works in 32-bit, unlike today's DAW software where we have a software/paid to get both together. I would have to work on many projects and limit myself to certain VST, as well as not using advance VST plugins or stored brought VST.
If limitation isn't bad enough, i have to learn how this software works. Most musician like myself have only learn by DAW, compose or by real instruments, this software is like ancient DAW it predates VST files. i dont think it is that bad it seems like the standard piano i think just with numbers but then i don't know how to change the pitch or volume or speed. The best way i found to avoid all the OpenMPT learning crove is by this video explain how to import midi to make mod format:
Still this doesn't fix the limits of VST which brings some problems itself. There are free VST yes, but some are not for commercial usage i would have to look and confirm , you may also not like the free versions because free ones aren't the best or are sound record put into VST (long technical story). Also i like to ask why make it into a gameboy file that only works on gameboy emulator in today's gaming. if this was a simple "make music file with gameboy limits" i would have easy make it in my DAW with gameboy VST i had around. Then you would release it as a windows/mac/linux program for people to buy, i just don't understand why the big limit to only gameboy.