Hi One Horse,
Try putting this on your button "click" event (you need to go up to the stage scope, to get the symbol):
I tried that also and it didn't work.
I've uploaded a file showing my above code working. Instead of just using "play", I'm telling it to play from a label: play("in"). If your "NA" symbol has autoplay unchecked, there may be some weird action when you tell it just "play()".
Thank you for your help. I turned off autoplay and set an "in" point and that seemed to do it.
No problem, glad it worked! Can you mark my reply as "correct"?