Before you download this code, depending on what firewall you have, it is likely that your computer might think the sketch is a virus since it plays music without your permission (i.e. as soon as the sketch starts). Hope this clears up any potential confusion.
First:
I uploaded it to google drive because there is a file upload limit from github which is 25 mb
just download background music and paste in data folder
link: https://drive.google.com/file/d/19hKFRfq131Qp0D1-lgjWl2drilNOP2n-/view?usp=sharing
Second:
Import library sound, follow this step.