when I try and add a MIDI file, one from my piano or a downloaded one, the app says that the file type is not supported, can you please help me with this
Are you using the Import File button on the home screen? Using the wrong Import button could cause that issue.
This could also be caused by the files not having the correct extension - the extension for the file needs to be ".mid"
If you're still having issues, please upload the MIDIs files to this post, or alternatively email to visualmusicdesign@gmail.com
Thank you!