This just in: Thousands of college students' favorite jam act, O.A.R., will hit the appropriately jammy outdoor setting of Mizner Park Amphitheatre on Friday, October 3. Opening acts are Between the Trees and Matt Hires. Tickets cost $30 in advance, $32 the day of the show, and are available through www.livenation.com and www.ticketmaster.com. They go on sale Friday, July 25, at 10 a.m. -- Arielle Castillo