I have a large collection of music on an external drive. I have an imac connected via airport extreme, I believe it's wireless G. I purchased an ATV today to be delivered next week. Both ATV and Imac will be using my home network. My AE is located in my finished basement with my modem, one floor below my Imac. Should flash (hack) the ATV to take my external drive or should I do the music through wifi system? Will there be a lag when I select various songs? That's my concern. Not really that concerned about video, I would like to show my aperture library though. Again is this ok wirelessly?