Of course, unless you dish out the even bigger $$, the Air does not have much as far as storage. I have been trying to come up with a good system for an external media library. I purchased a Time Capsule with the intent of plugging my external hard drive with my iTunes library into the USB port. Got it to work, but it was too unstable, often taking down the wireless network with it. Then had to reboot Time Capsule. For time being I am running it off my old MacBook, but do not love this. I do not want to do Google Music, etc. I want to run iTunes and have the library getting backed up via TimeMachine, thus wherever the media resides needs to have Mac OS Extended file system. My newest idea is to get a real old MacMini off of eBay and plug it into the Time Capsule with ethernet and have the USB external drive plugged into the Mini. Sometimes the Minis sell for less than $100, especially if the internal drive is shot or missing, which I would not need anyway. Just something to get the hard drive on the network, ethernet connection preferred. I would like to spend less than $100, 50 or 60 would be great. I see these NAS adapters that provide an ethernet connection for USB devices, but they all look like they only support FAT32 file systems. External drives with ethernet built in seem to be all over $100. Thanks in advance for any ideas!!