Yepp, controller command 0x111...Yep, I remember the MIDI loop points, I implemented them myself a few times. Very game specific feature, I'm pretty sure people didn't have it in mind when designing the MIDI standard and it's just an arbitrary controller command RPG Maker decided to use.
Okay because some people want to test (includes MIDI):
Here is the CIA https://easyrpg.org/downloads/tmp/easyrpg-player-latest.cia
And a 3DSX ZIP: https://easyrpg.org/downloads/tmp/easyrpg-player-3ds-latest.zip