Cadillac 2007 DTS Owner's Manual page 282

Root Directory
The root directory of the CD-R is treated as a folder.
If the root directory has compressed audio files, the
directory displays as F1 ROOT. All files contained
directly under the root directory are accessed prior
to any root directory folders. However, playlists (Px)
are always accessed before root folders or files.
Empty Directory or Folder
If a root directory or a folder exists somewhere in
the file structure that contains only
folders/subfolders and no compressed files directly
beneath them, the player advances to the next
folder in the file structure that contains compressed
audio files. The empty folder does not display.
No Folder
When the CD-R contains only compressed files,
the files are located under the root folder. The next
and previous folder functions do not display on
a CD-R that was recorded without folders or
playlists. When displaying the name of the folder
the radio displays ROOT.
When the CD-R contains only playlists and
compressed audio files, but no folders, all files are
located under the root folder. The folder down and
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the folder up buttons search playlists (Px) first and
then goes to the root folder. When the radio
displays the name of the folder the radio
displays ROOT.
Order of Play
Tracks recorded to the CD-R play in the
following order:
•
Play begins from the first track in the first
playlist and continues sequentially through
all tracks in each playlist. When the last track
of the last playlist has played, play continues
from the first track of the first playlist.
− Playlists can be changed by pressing the
next and previous folder button, the seek
buttons, or turning the tuner knob.
•
Play begins from the first track in the first
folder and continues sequentially through
all tracks in each folder. When the last track of
the last folder has played, play continues
from the first track of the first folder.
When play enters a new folder, the display does
not automatically show the new folder name unless
the folder mode has been chosen as the default
display. The new track name displays.