GMC 2007 Acadia Owner's Manual page 296

MP3/WMA Format
If you burn your own MP3/WMA disc on a
personal computer:
•
Make sure the MP3/WMA files are recorded
on a CD-R or CD-RW disc.
•
Do not mix standard audio and MP3/WMA
files on one disc.
•
The CD player is able to read and play a
maximum of 50 folders, 15 playlists, and
a combined total of 512 folders and files.
•
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 .mp3 or .wpl
extension (other file extensions might
not work).
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•
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 can 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
might cause the disc not to function in
the player.
Playlists can be changed by using the previous
and next folder buttons, the tuner knob, or
the seek buttons. An MP3/WMA CD-R or CD-RW
that was recorded can also be played using no
file folders. If a CD-R or CD-RW contains
more than the maximum of 50 folders, 15 playlists,
and a combined total of 512 folders and files,
the player lets you access and navigate up to the
maximum, but all items over the maximum are
not accessible.