NASHVILLE, Tenn. – During the six decades since United Record Pressing stamped out the Beatles’ first U.S. single, the country’s oldest vinyl record maker has survived 8-tracks, cassettes, CDs, Napster, iPods and streaming services. Now, the Nashville-based company has rebounded so dramatically that some of its equipment and technology have been retrofitted to keep pace with an ever-growing demand for old-school vinyl.