South End Library's head librarian Anne Smart and filmmaker Alice Stone have decided to cancel tonight's evening of film due to today's snow storm, which is expected to resume tonight and into tomorrow. The event, in which Stone had planned to show excerpts from her film "She Loves to Ride "and excerpts from current work,  has been postponed to Tuesday March 1, at 6:30 PM. The Friends of the South End Library is looking forward to seeing you then.