Northeast Broadcasting has expanded its "Point" AAA network in Vermont to a fourth full-powered signal. Classic Hits "Cruisin' 93.7" WIFY Addison/Burlington joins 104.7 WNCS Montpelier, 95.7 WDOT Danville, 103.1 WRJT Royalton, and three translators in covering the northern two-thirds of Vermont and adjacent parts of New Hampshire and New York. The change took place on