Blank spots. Cannot save. – MIDI file player Review

Even with the March 2017 update, it still randomly stops making any sound--it will play a song beautifully, I will load another song from another app, and then neither the new song nor the old one maje any noise when I play them. The only solution I have found is to delete and reinstall the app. When I download and play certain files from the internet, sometimes notes which I know should be there and that I can hear in other apps simply do not play. When I copy a new file to the app using itunes with extension .midi, nothing happens. This isn't as bad as I thought since it recognizes files with extension .mid as MIDI files but is a liitle annoying. It lets you edit the MIDI settings (instruments and volume for individual channels) but there is no usable way to save your work. The app designer seems to think I should record the whole edited song and then save that, but for a long song I do not have the time. Also my settings keep randomly reverting to the original settings so I have to make the same changes over and over again. The sound on this is great, it sounds better than any other midi app I have tried. But it needs to actually play the notes that are there and there needs to be a way to get files onto the thing!
Review by Ariel J. Transparentpseudonym on MIDI file player.