Hi Mark! Thank for your solution which help me a lot! But I have a trouble now. I want to use 2 images to represent “play” and “pause” instead text. So I import 2 images and edit the PLAYBOTTON’s innerHTML. But I don’t know how to edit the innerHTML in these code below:
hypeDocument.getElementById('playButton').innerHTML = "Play"
In fact I’m a designer and I know little about code…so maybe it’s a very stupid question…~:weary:
I look forward your help, thankkkkk you!~! 
This is my test hypedocument. musictest.zip (176.9 KB)