Yes, exactly.
I have try to send fastrewind and stop before play, but nothing happens. It seems like i need to start play in IanniX and then others osc command function right … except play.
And if IanniX is playing i can stop it but not resume play again.
I can setSpeed to all cursor (i.e. setSpeed all 1|0) like You said, but this (obviously) do not stop the score.

thank,
ciao,
francesco.