Chevrolet 2008 Silverado 1500 Pickup Owner's Manual page 288

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 the CD label. 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.
If a disc contains both uncompressed CD audio (.CDA)
and MP3 files, a folder under the root directory called
CD accesses 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 next and previous
folder function does not display on a CD that was
recorded without folders or playlists.
3-110
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 up buttons search
playlists (Px) first and then goes 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
the folder mode has been chosen as the default display.
The new track name displays.