Sony D-NE20 - Manual (Page 21)

Playback options
(PLAY MODE)
Display on the remote Explanation
No indication All tracks on the CD are played in a track number order.
For the ATRAC CD/MP3 CD, a playing order is different
according to the setting of the “PLAY ORDER” in the OPTION
menu.
All files in the selected group or all groups are played (ATRAC
CD/MP3 CD only) ( page 22).
1 The current track is played once.
SHUF All tracks on the CD are played once in random order.
SHUF All files in the selected group are played once in random order
(ATRAC CD/MP3 CD only) ( page 22).
Tracks to which Bookmarks have been added are played. The play
of tracks with Bookmarks starts in track number order, not in the
order you added the Bookmarks ( page 22).
Tracks in the selected m3u play list* are played (MP3 CD only)
( page 22).
a00 The tracks you have played most frequently from the CD are
played from the 10th to the first.
a00 SHUF Up to 32 tracks, which the player has automatically memorized as
the most frequently played ones, are played in random order.
PGM
Up to 64 tracks are played in your favorite order ( page 23).
INTRO About the first 10 seconds of all tracks which follow the current
track are played once. If you turn the function dial to select
P MODE/
, and press the function button during INTRO play,
you can listen to the current track to the end.
* An m3u play list is a file in which an MP3 file playing order has been encoded. To use the play list function,
record MP3 files on a CD-R/CD-RW using encoding software that supports the m3u format.
You can play the top 8 lists (listed by file name) on your screen on the CD player.
Continued 
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Playback
D-NE20/NE20LS.GB.2-318-320-11(1)