Is there a way to have one frame start over while the others keep playing?
Try it with this attachment
Final Fantasy fan, huh? I’m hooked on them myself, cracking games (the motto ‘The Brave Do Not Fear The Grave’ was etched on the battle arena in the Gold Saucer in FF7, for those not in the know). 
There wasn’t any attachment, but if I understand what you mean correctly then all you need to do is have the MC you want to loop without a stop(); script on the end. That will keep it playing over and over.