Here's the setup - Synology NAS with my iTunes Library, Mac Mini (Snow Leopard due to Mini's age) acting as server. iTunes library is pointed to the NAS and generally works fine. ATV connects via Home Sharing and works greta. However, periodically I get a cannot find file error. If I go to the Mac Mini and click on the file, it starts and now works from the ATV as well. Sometime sit's just Movies, others TV shows; though often only some episodes. Any ideas?