There wasn’t any doubt that Odin Medeiros-Riley was going to become the youngest KVMR 89.5 FM member, since he joined three months before he was born in January. That, of course, was courtesy his mom, Amee Medeiros, a KVMR volunteer broadcaster from the station’s 2013 class. As for mom, right now, she’s a substitute broadcaster and also appears occasionally on the Women’s Collective show Monday evenings. Her next sub gig is June 5 on the Thursday Music Magazine (4-6 p.m., 89.5 FM, kvmr.org streaming). It will be the first broadcast of the festival on a fulltime radio station in the festival’s 30something-year history.