My files are exactly cut for a seamless transition, if they would concatenate correctly. It’s a timing problem, so crossfading won’t resolve the problem (a bad timing is still a bad timing with crossfades).
It seems there’s some overcomplicated solutions using Quantz clocks or TimeSynth, but I didn’t figure it out yet (and it always leans on bars and beats, which is irrelevant for my case, I only want a file to follow another).
It’s a SHAME a 1986 chiptune music behavior couldn’t be replicated with native simple tools in 2021…