Randy Warner quit veterinary medicine to enjoy retirement just fiddlin' around. A veterinarian for three decades, the small-animal doctor had the Washoe Valley Veterinary Hospital, just north of Carson City, until his musical avocation replaced his healing-arts vocation. After a decade doing both and winning accolades for playing, he has more fiddle time. "For my 50th birthday I decided to take up the fiddle," the 60-year-old musician said. Then he grinned. "I wanted to be a renaissance man, you know." Folks are impressed with his success because he took up the instrument at mid-life. Crystal Elliott, who also lives just …