Thank you Mad-Matt for your help,
But I have a problem that I'm not that familiar with the OSC configuration, it is my first trial.
When you have said: "Sure if you're able to send an OSC message to both MadMapper at the same time, they will stay in sync (if the movie player is FFMPEG)."
Did you mean from the OSC application that exists on the Apple store? because this application, from what I have seen on the internet it can control and send commands to one OSC recipient, in this case, one MM station will be controlled only. Correct me, please if I'm wrong.
On another hand, when you talked about the MM Router, should I download it using my personal key from MadMapper?
(PS: I took too much time to answer because I haven't received a notification or email from your reply!!)