The Guthrie Theatre is focusing its two-year-long search for a new theatre site on Minneapolis' downtown riverfront. A Guthrie representative met with city officials late Thursday who say the Theatre is interested in land next to where the Minnesota Historical Society's Mill Ruins Park project is taking shape. Minnesota Public Radio's Dan Olson reports. Minneapolis mayor Sharon Sayles Belton says her meeting Thursday afternoon with a Guthrie representative convinces her the Theatre is now interested in the riverfront location. The site is three blocks north of the Metrodome, on the Mississippi riverfront, near where the historic Stone Arch bridge curves across St. Anthony Falls. Sayles Belton says Guthrie officials will talk over their options at a Monday board meeting. audio . . . that's the one they want to try advance to their