Thank you for the great question. With the USB on the back of the Slingbox 500 you can stream content to another computer if it is install on a Hard Drive that is independent from your computer. Being that these files are still install on a computer you would have to move then to another Hard Drive to watch them away from home. I will put a link of how this works and what types of file are compatible with the My Media features.
Hope this helps,
Sling Moderation Team