Samsung UN55ES6150 E-Manual page 521

select Videos, Photos, or
the left side of the screen.
N
You must select the kind of
content that is already in the
playlist. For example, if you want
to add files to a music playlist,
you must select Music.
2. On the right side of the screen,
highlight and select the device that
has the files you want in the playlist.
AllShare Play displays the folders
Music on