External HD question

I currently have a 2TB external drive connected to a little netbook that streams to an Airport Express (then to a DAC Magic/Brio-R). Sounds great.

I would really love to cut the streaming out of the picture. I would really also love to *not* have a laptop--however small--sitting next to my stereo (not to mention that it is my understanding that XP is not great for a direct connection).

What is the minimal product I would have to buy to accomplish as-direct-as-possible of a connection to my DAC? I imagine it would have to have some sort of operating system, GUI, and inputs/outputs...I have been told that some Logitech products may do this, but frankly, I am trying to keep everything of very good quality.

I am afraid that a chorus of people is going to say either "get windows 7 and suck it up" or "get a mac mini." Isn't there some tiny little box out there that fits my description without paying for a new mac?

As always, I am sorry if I have duplicated anything from a previous post--I tried to search around.