Dude there are noise ordinance laws. You were probably exceeding the allowable decibels. The police officer was just doing his job and was well within his rights to ask for your license, registration, and insurance. He could have given you a ticket but he chose instead to give you a warning. So he was being a jerk to you; he was probably having a bad day, which is understandable given the events of earlier this week. How were you to him? Polite? Respectful? Grateful? Hopefully you learned not to play your music so loud. Not everyone else on the road appreciates it, and it causes you and other drivers not to be able to hear emergency vehicles approaching. Lighten up, and be thankful you didn’t get that ticket.