Cadillac CTS 2013 Owner's Manual page 205

Finalise the audio disc before
burning it. Adding music to an
existing disc can cause the disc
not to function.
Playlists can be selected by using
the previous and next folder
buttons, the SEEK arrows, or
\ s
the FWD or REV buttons. An
MP3/WMA CD-R or CD-RW that
was recorded using no file folders
can also be played. If a CD-R or
CD-RW contains more than the
maximum of 50 folders and playlists
and 255 files, the player lets you
access and navigate up to the
maximum but all items over the
maximum are not accessible.
The HDD Radio can support more
than 255 files on an MP3/WMA disc.
The HDD Radio does not support
playlists on a disc or USB storage
device.
Root Directory
The root directory of the CD-R or
CD-RW is treated as a folder. If the
root directory has compressed audio
files, the directory displays as F1
DISC. All files contained directly
under the root directory are
accessed prior to any root directory
folders. Playlists (Px) are always
accessed after root folders or files.
The HDD Radio displays the root
directory of an MP3/WMA disc as
F1 MP3 and the root directory of a
USB storage device as F1 USB.
Empty Directory or Folder
If a root directory or a folder exists
somewhere in the file structure that
contains empty folders and no
compressed files in them, the player
advances to the next folder in the
file structure that contains
compressed audio files.
Infotainment System
No Folder
When the CD contains only
compressed files, the files are under
the root folder. The next and
previous folder functions do not
display on a CD that was recorded
without folders or playlists. The
radio displays F1 DISC for the root
directory.
When the CD contains only playlists
and compressed audio files, but no
folders, all files are under the root
folder. The folder down and the
folder up buttons search playlists
(Px) first and then go to the root
folder. The radio displays F1 DISC
for the root directory.
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