Unlike MP3s, which record sound, MIDI files record instructions : which note to play, how hard to strike it, and when to release it. This distinction is critical for Arabic music, which relies heavily on (quarter tones) and complex maqams (scales) that standard Western MIDI often struggles to handle.
Does the file include the pitch-bend data necessary to trigger the "half-flat" notes found in Maqamat like Rast or Bayati ? Arabic Midi File Songs