Public address talking during FTs

[CoachJW]

A local school has a PA that announces the play by play--"there's a steal by Wilson, the feed to Johnson..." as it's happening. This is annoying like fingernails on a chalkboard, but I'm unaware of a specific rule against it. I bring this up because he gets so caught up in his descriptions that he'll often be behind on the nuts and bolts stuff. So one of my players is at the FT line, he has the ball ready to shoot, and we've got this PA blaring: "the foul was on #42, his first personal, second team foul..."

The guy is not intending to distract my player, but there's definitely a level of unprofessionalism that shines through. As an official, would you step in here and tell the guy to shut up when a FT shooter has the basketball?