Join WXRT, Metromix and the Chicago Reader for two full days of non-stop live music on two stages, over 40 vendors will be on display, including artists and craftspeople displaying their treasures in the sunshine together with local restaurants, great local brews from Berghoff beer, plus wine and sangria from Mirassou and McWilliams Estate!    For fest info, go to www.bigcreekevents.com, www.rvcc.biz  or call the Roscoe Village Chamber at 773 327-5123.   Saturday, June 28 West Stage: THE REDWALLS, WACO BROTHERS, Dot Dot Dot (Next Great American Band finalist), Steepwater Band, Rocket (Next Great American Band), Hey Champ   East Stage: CURSIVE, MARITIME, Sybris, Unwed Sailor, Mark Rose, Everthus The Deadbeats   Sunday, June 29 West Stage: SMOKING POPES, JUSTINE TOWNES EARLE (Steve Earle's son), Air This Side Of Caution, Ezra Furman and the Harpoons, Anne Harris Band, Cavashawn   East Stage: AMERICAN MUSIC CLUB, JONATHAN RICE, Maria Taylor, Casiotone For The Painfully Alone, Nik Freitas, Yourself and The Air   For you parents, there's some great kid's prgramming (Ronald MCDonald, Museum of Science & Industry and much more) on the east stage from noon-3 p.m. both days!