Just a little off the beaten path...
I recently bought a Synology home NAS Server to hold all my digital media for sharing between
devices I have at home (PC/MAC/DROID/BOXEE).
Its more than just a media server though as it has many built-in media capabilites; itunes server, dlna, slim server etc.
One of the cool things about it is that it has a USB port that allows you to connect a USB dac to play music directly from the server. I hooked up my FUBAR USB Dac, and it works like a champ!
They also provide Droid/iPhone apps to access the system. I can view pictures, control playback to the usb attached dac, or stream music directly to my device.
So far it has been working well.
www.synology.com