Oxford is preparing for two days of music, culture, and community as the annual Oxford Juneteenth Festival returns June 19-20 with a lineup of family-friendly events celebrating freedom, heritage and togetherness. On Friday, Linen on the Lawn has been moved indoors due to expected rain and will be held from 6:30 to 9:30 p.m. at The Powerhouse. Dress in your best linen attire and enjoy an evening of music, fellowship and fun featuring live entert…