Asus Eee Pad Transformer Prime TF201 Manual page 46

You can also select a file from the Playlist. The Playlist offers a common
space for the connected devices to share files. Tap on the plus sign (+) to
create new lists.
To enable Digital Media Server, tap on Settings at the upper right
5.
corner and tick Digital Media Server Settings to allow the other
connecting devices to access media files on your Eee Pad. You can also
select the location of the file you want to share.
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ASUS Eee Pad Manual