Synetic Theater, known for performing underground (stylistically as well as logistically) at the very damp basement movie room called Rosslyn Spectrum, have taken up residence for a month at the Kennedy Center’s “Family Theater” which used to be the American Film Institute’s contribution to John F. Kennedy’s vision for a multi-disciplinary center for the arts…until AFI got lured to the ‘burbs as part of a multi-million dollar plan to class-up the neighborhood across the street…