Oh yeah –
Yep - anytime you replay recorded music there are copyright issues. You need to buy a license from ASCAP and BMI, and possibly SECAP for just the limited times your are open. Don't even think about trying to fool them. My friend owns a campground, and they put on their newsletter they were going to have a Margaritaville themed golf cart parade. They got a call because they were going to play Buffett music.
My wife ran a night club for a decade, and she had to deal with this all of the time. Get the license and sleep well at night.
Travis "Big T" Russell
Big T Productions Inc
Owner and Operator of "The Plague" and "Camp Nightmare"
Customer Quote of the year: "Damn, I pissed myself"