BRYN LOOSLEY spent much of his youth as frontman for raucous roots rockers Buffalo Creek. But after seven years of playing dives all over Northern California, selling their three albums out of his sweet brown van, Bryn left town. He sold the van and moved to Portland, Ore. to write and perform on his own.BRYN'S FIRST ALBUM, The Wrecker, will be available March 21 and features performances by Jackie Greene, Tim Bluhm, Shannon Curtis, Nick Bearden and Audley Freed among others. (But Bryn still plays with Buffalo Creek and wishes he still had that van.)