not necessarily, if the one you have is stable, you’d better keep it.
On the github version, I made a few modifications, a few opcodes I think (can’t remember exactly).
Should be stable too anyway.
Le me know if there is something you need about jpmidi, the github page should be considered the official repo since Julien accepted to let me host it.
I’ll let you guys compare WildMidi and other regarding the easiest/best jack integration you need for Zynthian.