Old Macs never die, they just get reused. An old MacBook becomes a school laptop for one of the kids. The old 21.5-inch iMac becomes a FaceTime "videophone" for Grandma. Macs have good longevity and older units are usable for a variety of purposes other than day-to-day work. Read along to see how we were able to transform a 2014 Mac mini into a home media server.