my rushed out tuto for schmutz

I can write a quick tutorial though. Clean up the midi (aka put everything you want on a blank layer). First link is a midi to text converter. Second one is useless for you (midi to ogg), 3rd one is also useless if you have fl. You have to ctrl+a ctrl+c the entire page and paste it in the chart.txt file included in the autocharter folder (replace everything in the current chart.txt). Make sure the autocharter is set to fl studio in the setting and not tux guitar then open the autocharter, press 1 and type chart (no extension) then select the blank layer with the notes.

It will generate a chart.chart file

I recommend looking up the chart file in a notepad to make sure there's no bpm duplicates. Feedback doesn't mind them but ghtcp will be mad if there's 2 bpm events on the same note position

Generally it's just the initial bpm repeating itself and nothing else but in some specific situations (like madness march-style bpm increase) it can have too many bpm changes in a short time span.