Cannot figure out how to import MIDI from Mac

I have several hundred MIDI files on my Mac, all ending in .mid. I tried changing the extension to .midi with the same results.
- I can drag them into iTunes, they show up and sync to my iPad, but Notion does not display them on the main screen.
- I moved them to Dropbox and allowed Notion to have access. All that I see in the "import" window is a folder that says "Go to Parent Directory." So far, I am not a happy camper because this should not be that hard... Suggestions are more than welcome!
- I can drag them into iTunes, they show up and sync to my iPad, but Notion does not display them on the main screen.
- I moved them to Dropbox and allowed Notion to have access. All that I see in the "import" window is a folder that says "Go to Parent Directory." So far, I am not a happy camper because this should not be that hard... Suggestions are more than welcome!