Things seemed settled. Blu-ray, the high definition format favored by Sony, finally overcame the competition offered by rival Toshiba, HD DVD, and the next-generation format wars were over. Not so fast, says New Medium Enterprises, who are touting an alternative to Blu-ray they call the versatile multilayer disc. VMD has the one attribute no one has ever ascribed to Blu-ray; it’s cheap.An HD VMD player costs less than a Blu-ray because it uses the red-laser technologies found in today’s standard-definition DVD