The Ridgefield Board of Selectmen has approved a 20-year lease with the Ridgefield Playhouse, with additional space in the town-owned Venus Building.  The Venus lease calls for $68,000 a year in rent.  The auditorium lease will continue to be $1 per year, and also covers a planned backstage area and concession space.  The Playhouse will pay about $35,000 for utility charges.  The Ridgefield Playhouse can move into the Venus building once the first floor of the south wing is renovated and the Board of Education moves there.  An elevator and new entrance are planned.