GMC Yukon XL Denali Owner's Manual page 206

7-16 Infotainment System
MP3 and WMA Supported Files
Format
The radio can play .mp3 or .wma
files that were recorded onto a
CD-R or CD-RW disc.
Compressed Audio or Mixed Mode
Discs
The radio plays discs that contain
both uncompressed CD audio and
MP3/WMA files depending on which
slot the disc is loaded into.
The DVD player only reads
uncompressed audio and ignores
MP3/WMA files on a mixed
mode disc.
The CD player reads both
uncompressed audio and MP3/
WMA files on a mixed mode disc.
Uncompressd audio is played
before MP3/WMA files. Press the
CAT (category) button to toggle
between uncompressed audio and
MP3/WMA files.
CD R or CD RW Supported File
and Folder Structure
The DVD player supports:
Up to 255 folders.
Up to eight folders in depth.
Up to 15 playlists.
Up to 40 sessions.
Playlists with an .m3u or .wpl
extension.
Files with an .mp3, .wma, or .cda
file extension.
The CD player supports:
Up to 512 files and folders.
Up to 8 folders in depth.
Playlists with an .m3u or .wpl
extension.
Files with an .mp3, .wma, or .cda
file extension.
Root Directory
The root directory of the disc is
treated as a folder. If the root
directory has compressed audio
files, the directory displays as F1
ROOT on the radio.
If a disc contains both
uncompressed CD audio and MP3/
WMA files, a folder under the root
directory called CD accesses all of
the CD audio tracks on the disc.
Empty Folder
Folders that do not contain files are
skipped, and the player advances to
the next folder that contains files.
No Folder
When the disc contains only
compressed files, the files are
located under the root folder. The
next and previous folder function
does not function on a disc that was
recorded without folders or playlists.
When displaying the name of the
folder, the radio displays ROOT.