Hello
I am new to PBI development, so I'm assuming there is an easy solution 
I intend to create a background mp3 player for reports on the online power BI service, which I understand will not work for the desktop verion (which is fine).
I currently have a very simple version working, that simply has a hard coded mp3 URL in an HTML audio tag, within the 'update' method.
How would I go about making the mp3 URL a variable that can be inputted via the fields section in Power BI? I.e. not hard coded?
The end goal is to play sounds/music depending on slicer configuration. (with no GUI elements e.g. play/pause button).
Any help would be much appreciated.