Hello! Thanks for your comment. Glad you like my music ^^
May I know what engine you're using? The General Version should loop seamlessly. I tested them in Audacity, RPG Maker MV, and Unity.
apart from Victory1, the pieces don't have separate intro parts (musically). They were designed to loop from the very end back to the very start, so it wouldn't make sense to make separate files for them. The only differences between the RPG Maker Version and the General Version is that in the beginning of the General Version there are some tails from the ending. You can fix this by using fade-in for the first time it plays or adding some transition SFXs to cover them. This is where you can be creative as the developer ^^
Thanks again and good luck!