Linksys NHM300 2-Bay Media Network Storage Server for $109.99 shipped.  Note that it shows up as $129.99 on the product page but an automatic copuon is applied once you add the item to the cart as shown here.  This device provides the ability access digital media library throughout the home as well as from anywhere through an Internet browser.  It comes with two empty hard drive bays and two USB ports for storage and expansion.  Here is a video overview of this device.  Most places have it for about $135.