Default midi player in Win 10
No explicit, hateful, or hurtful language. Nothing illegal.
This method usually does the trick:
- Right-click a MIDI file.
- Open with → Choose another app...
- Make sure the "Always use this app to open .mid files" check box is selected.
- If Synthesia isn't in the list, click "More apps" at the bottom, then "Look for another app on this PC" at the bottom (again).
- Choose Synthesia from the file picker (usually found in "C:\Program Files (x86)\Synthesia\Synthesia.exe").