Minimized Pop-up / music player

Hello guys,

Well I have a problem that I don’t know with which way to solve yet. My customer wanted me to add music on her site. It should start playing on load in a new window in order not to stop when switching pages.

SO I thought of adding a minimized pop-up window on my index page and embedding the player on that window. What do you think?

Any plugin recommendation or code help would be perfect!