Plex is the easiest way I’ve found to turn any home computer into a media server. You install a program on your home computer, either Mac or PC, and it indexes your content for you. Then you install a slightly different version on any computer or smartphone you want to view the indexed media on. Simple.
Plex is insanely powerful, making all your media viewable on almost any device with added bonuses like proper episode names, season folder covers, and episode descriptions.