My setup is one PC, one 2012 Mac Mini, and a 2TB NAS (RAID 1). In the end, I would like all music, photo, video content to be housed on the NAS (for reliability) and both computers access the content via their respective programs. A photo/music/video file added to the NAS by either machine should show up on both computers. This was fairly easy for my PC, but I'm lost in the OS X world. What settings do I need to change in iPhoto/iTunes to accomplish this?