GMC 2007 Acadia Owner's Manual page 307

RDM (Random): With the random setting,
MP3/WMA files on the CD-R or CD-RW can be
listened to in random, rather than sequential order.
To play MP3/WMA files from the CD-R or
CD-RW you are listening to in random order,
press the pushbutton positioned under the RDM
label until Random Current Disc displays.
Press the same pushbutton again to turn off
random play.
h
(Music Navigator): Use the music navigator
feature to play MP3/WMA files on the CD-R
or CD-RW in order by artist or album. Press the
pushbutton located below the music navigator
label. The player scans the disc to sort the files by
artist and album ID3 tag information. It might
take several minutes to scan the disc depending
on the number of MP3/WMA files recorded to
the CD-R or CD-RW.
To cancel music navigator while the player is
scanning, press the pushbutton located below the
music navigator label or eject the disc.
The radio can begin playing while it is scanning the
disc in the background. When the scan is finished,
the CD-R or CD-RW begins playing again.
Once the disc has been scanned, the player
defaults to playing MP3/WMA files in order by artist.
The current artist playing is shown on the second
line of the display between the arrows. If you want
to listen to MP3/WMA files by another artist, press
the pushbutton located below either arrow button.
The disc goes to the next or previous artist in
alphabetical order. Continue pressing either button
until the desired artist is displayed.
To change from playback by artist to playback by
album, press the pushbutton located below the
Sort By label. From the sort screen, push one
of the buttons below the album button. Press the
pushbutton below the back label to return to the
main music navigator screen. Now the album name
is displayed on the second line between the arrows
and songs from the current album begin to play.
Once all songs from that album are played, the
player moves to the next album in alphabetical
order on the CD-R or CD-RW and begins playing
MP3/WMA files from that album.
To exit music navigator mode, press the pushbutton
below the Back label to return to normal MP3/WMA
playback.
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