2009 GMC Acadia Owner's Manual - Page 225

Instrument Panel 3-103 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 could take several minutes to scan the disc depending on the number of MP3/WMA files recorded to the CD-R or CD-RW disc. 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. 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 displays 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. BAND: Press this button to listen to the radio when a CD or a DVD is playing. The CD or DVD remains inside the radio for future listening or viewing entertainment. DVD/CD AUX (Auxiliary): Press this button to cycle through DVD, CD, or Auxiliary when listening to the radio. The DVD/CD text label and a message showing track or chapter number displays when a disc is in either slot. Press this button again and the system automatically searches for an auxiliary input device, such as a portable audio player. If a portable audio player is not connected, "No Aux Input Device" displays.