Import the MIDI into FL Studio. It doesn't sound like you did that, because you say the 'step sequencer comes up blank.' And just for some clarification, the step sequencer isn't where you edit MIDI information. You edit MIDI information in the PIANO ROLL. Go to the Piano Roll in FL Studio on the MIDI channel that you want and hit alt+Q.
FL Studio: How To Quantize MIDI Notes WinkSoundFL Studio: How To Quantize MIDI WinkSoundThe purpose of quantization in music processing is to provide a more beat-accurate timing of sounds and is frequently applied to MIDI notes created by the use of a controller keyboard or drum machine. In this tutorial John G from Becomeabeatmaker.com explains how to quantize your MIDI performances within FL Studio.Learn more about Becomeabeatmaker and connect with John G online:Website -@becobeatmakerzFacebook - http://www.facebook.com/jgbecomeabeatmakerhttps://www.youtube.com/watch?v=BS2rrwLVAI8.
FL Studio: How To Quantize MIDI WinkSoundThe purpose of quantization in music processing is to provide a more beat-accurate timing of sounds and is frequently applied to MIDI notes created by the use of a controller keyboard or drum machine. In this tutorial John G from Becomeabeatmaker.com explains how to quantize your MIDI performances within FL Studio.Learn more about Becomeabeatmaker and connect with John G online:Website – – @becobeatmakerzFacebook – http://www.facebook.com/jgbecomeabeatmaker.
Tip 4If you hold the Alt key and click on any MIDI note in the Piano Roll editor, you will reveal a control window for that individual note. Using this you can make incredibly precise settings for a note including pan, velocity, pitch and mod as well as a start time and duration. Take complete control of your MIDI parts with this handy tool. Tip 5Select one or more notes and then from the Tools menu choose Arpeggiate. From the resulting window, click on the file browser button to load a preset file from FL Studio’s library. You can then make edits to the preset using the controls in the arpeggiator window. Other handy programming tools in this menu include flam, strum, randomize and scale levels.