Hours before they were to perform at a free outdoor concert Sunday in Woodland Hills, the '80s band A Flock of Seagulls had up to $70,000 worth of equipment -- including the sound files for a pending solo album by their lead singer -- stolen at a Downey hotel. The band played a gig in Bellflower Saturday night and then parked their 15-passenger Ford E-350 van near the reception area of a Comfort Inn in Downey around 1:45 a.m., said frontman Mike Score. When they awoke, it was gone. Score said they noticed the van was missing at about 9...