- Drag your MIDI into the chest
- Fiddle with the settings, until you get the fewest numbers in red
- Click Get Blueprint
- Copy and paste into Factorio
- Activate the constant combinator labelled PLAY
Drag your MIDI file onto the Requester Chest, or click the chest and browse for a file.
The settings page will list the tracks and instruments found in the MIDI file.
If any notes are higher or lower than what their instrument can play, a red arrow and the number of notes will appear. These notes will not be heard in-game.
You can attempt to fix these by either changing the Factorio instrument or by shifting the notes up or down - either from the instrument or the track.
Please note that instruments and tracks contain the same set of notes: each note will get shifted by both it's instrument and track.
Click Get Blueprint, and enjoy your new song!