GMC Yukon Denalid Owner's Manual page 304

Using an MP3/WMA CD-R or
CD-RW Disc
Compressed Audio or Mixed Mode Discs
The radio will also play discs that contain both
uncompressed CD audio (.CDA files) and
MP3/WMA files depending on which slot the disc
is loaded into. By default the radio will read
only the uncompressed audio (.CDA) and ignore
the MP3/WMA files on the DVD deck. On the
CD deck, pressing the CAT button will toggle
between compressed and uncompressed audio
format, the default being the uncompressed
format (.CDA).
MP3/WMA Format
If you burn your own MP3/WMA disc on a
personal computer:
•
Make sure the MP3 files are recorded on a
CD-R or CD-RW disc.
•
Do not mix standard audio and MP3 files on
one disc.
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•
The CD player (lower slot) is able to read and
play a maximum combination of 512 files and
folders. The DVD player (upper slot) is able to
read 255 folders, 15 playlists and 40 sessions.
•
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
8 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 (other file extensions may not work).