Hey thanks for the help.
I tried using your code and wasn't able to get it to work yet. I noticed you had a typo "yourSymboToPlayl" - is that where i'm supposed to place my own symbol name? would I just put 'Stage' there?
I get this console error as well: Uncaught TypeError: Cannot read property 'play' of undefined
Also the checkscroll function - that script goes in my actual html page?