Controlled On/Off Background Music

Hi,

We are expiriencing some troubles trying to set background music on a Storyline360 project.

First I tried to just insert the song as a Media on the Slide Master and set a On/Off Buton, non problem here, everything as always and it works, except because everytime going to a different slide the music starts over again instead of continue playing; also if you turn it off in one slide, in the next slide starts again. So this is not the solution we are looking for.

Making some research about this topic I found this method with javascript that "Jackson Hamner" post some years ago but it is not working, I think becuase things have changed since and is not working anymore; we tested on an LMS and nothing.

I hope somebody can help us with this issue. 

Thank you very much!