So, I finally figured out how to get my custom tracks to play in game, but now I am a little confused on how to make my dream music overhaul mod. For levels like t1_rail, it's just one single track, easy peasy. But for the dynamic tracks found in pretty much every other level, how to I edit those to flow smoothly? I understand action and exploration music files, simple enough, but what does the atr and etr music files stand for? Thanks for all the help so far!