I have an older Apple TV, however I don't use the hard drive, I stream everything. The issue I have is that whenever I download anything new to my iMac, such as a podcast or tv episode, I have to manually "sync" the apple tv in iTunes before it'll recognize the new material. However, if I set the apple tv to automatically sync, it begins copying 160GB worth of material over to fill up the hard drive. Is there a way for me to have it automatically sync with itunes, and still have it stream only? Thanks.