02/05/2007 at 03:00 PM EST
Musician Dave Matthews and his wife Ashley Harper, a doctor, are expecting their third child in June, his rep confirms to PEOPLE.
The couple married in August 2000 and are already parents to 5-year-old fraternal twin girls Grace Anne and Stella Busina.
Matthews, 40, acted in the 2005 children's movie Because of Winn-Dixie. "I have twin 3-year-old daughters, so the idea of doing a film that they might find interesting is cool," he told PEOPLE at the time.
"But, at this point, it's hard to get through five minutes of this movie with them – if it doesn't fly really fast or if it's not Peter Pan, it's just not going to cut it."