I'm trying to decide on a setup for which to enjoy my media. I currently have an old PC running FreeNAS containing all of my music and movie rips(.avi, .mkv, .mov). About 270GB total of media of my 500GB HD. I use it as a server for the computers in my house(sharing with others in my home, about 3 computers, all Macs), as well as a UPNP server to view/hear some of this media to my Xbox 360. Well, time has come to sell my Xbox 360, I just am not playing it anymore, so I might as well buy a device that intended for use with media. It seems that the Apple TV will play most, if not all of my media. I have a few questions though. It looks like(from my limited research) that the internal HD can be upgraded, so I'd like to pick up a 500GB laptop drive to drop in there. The question regarding that is, can I use this to replace my media server? Will my Macs be able to view this as a shared drive that I can take/put files to and from? If not, will I be able to move individual files from my server to the aTV through the aTV? Or will I have to move files from one to the other via a computer? If not, that's fine, it'd just be nice to have all my media in one place, rather than dropping files on to flash drives before I can take the aTV to a friends house to watch movies. Given my preferences, do you think this would work well for me? If not, what are some other suggestions?