GMC 2009 Sierra - Manual (Page 239)

• Create a folder structure that makes it easy to find
songs while driving. Organize songs by albums
using one folder for each album. Each folder
or album should contain 18 songs or less.
• Avoid subfolders. The system can support up to
eight subfolders deep, however, keep the total
number of folders to a minimum in order to reduce
the complexity and confusion in trying to locate
a particular folder during playback.
• Make sure playlists have a .m3u, .wpl or .pls
extension as other file extensions might not work.
• Minimize the length of the file, folder, or playlist
names. Long file, folder, or playlist names, or a
combination of a large number of files and folders,
or playlists could cause the player to be unable
to play up to the maximum number of files, folders,
playlists, or sessions. If you wish to play a large
number of files, folders, playlists, or sessions,
minimize the length of the file, folder, or playlist
name. Long names also take up more space on the
display, potentially getting cut off.
• Finalize the audio disc before you burn it. Trying to
add music to an existing disc could cause the disc
not to function in the player.
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 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 contains only compressed files, the files
are located under the root folder. The next and previous
folder function does not function on a CD that was
recorded without folders or playlists. When displaying
the name of the folder the radio displays ROOT.
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 goes to the root
folder. When the radio displays the name of the folder
the radio displays ROOT.
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