It Plays Music does not collect any personal data. If it collected data, it’d have to be called It Plays Music and Collects Data—which is a horrible name. And since none of your personal data is being collected, none of your personal data is being sold.
It Plays Music will never ask for your email or contact info. You will never mysteriously end up on some newsletter. If you need to talk, you know where to find me.
See? Simple.
Now get out of here and go worry about something else. Like lice—yuck!