Perhaps there’s a market for classical CDs that never quite found a niche in the record stores. Selling over the web, one label brings back some classics. “Of late, the Web site is focusing on the large amount of great music that went nearly unnoticed in the hectic 1980s-early ’90s heyday of the compact disc. Interestingly, its reissue priorities are based on the frequency of play on radio stations, which keep deleted titles in their libraries.”