GMC 2009 Sierra - Manual (Page 235)

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 is displayed as the CD label.
All files contained directly under the root directory are
accessed prior to any root directory folders. However,
playlists (Px) are always be accessed before root folders
or files.
If a disc contains both uncompressed CD audio (.CDA)
and MP3 files, a folder under the root directory called
CD access all of the CD audio tracks on the disc.
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 contains only compressed files, the files
are located under the root folder. The
Sc
(previous)
and next
c T
folder functions do not display on a
CD that was recorded without folders or playlists.
When the CD contains only playlists and compressed
audio files, but no folders, all files are located under the
root folder. The folder down and the folder up buttons
search playlists (Px) first and then go to the root folder.
Order of Play
Tracks recorded to the CD-R or CD-RW are played 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.
• 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
you have chosen the folder mode as the default display.
The new track name displays.
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