by garfy » Sun Nov 25, 2018 10:20 am
Hello ruffsongs and welcome to the forums.
Unfortunately, you can't import MIDI files into ST3. You would need to export your MIDI file from Musescore and import them into a DAW with ST3 loaded as a virtual instrument.
Hope that helps.
System Specs: 2012 Mac Mini 2.6 i7 & 2015 MBP 2.2 i7, 16GB RAM
macOS10.15.7 Logic 10.6.1 Reason 11
Various IK, NI, Waves, Softube, Eventide, XLN software
Focusrite 18i20 x 2, Novation ReMote 25SL