2009 Buick Enclave Owner's Manual - Page 206

3-88 Instrument Panel If a disc contains both uncompressed CD audio (.CDA) and MP3/WMA files, a folder under the root directory called CD accesses all of the CD audio tracks on the disc. Empty Directory or Folder If a root directory or a folder exists somewhere in the file structure that contains only folders/subfolders and no compressed files directly beneath them, the player advances to the next folder in the file structure that contains compressed audio files. The empty folder does not display. No Folder When the CD-R or CD-RW disc contains only compressed files, the files are located under the root folder. The next and previous folder function does not display on a CD-R or CD-RW disc that was recorded without folders or playlists. When the CD-R or CD-RW disc contains only playlists and compressed audio files, but no folders, all files are located under the root folder. The folder down and up buttons search playlists (Px) first and then goes to the root folder. Change playlists by using S c and c T folder buttons, the f knob, or the SEEK arrows. An MP3/WMA CD-R or CD-RW that was recorded using no file folders can be played. 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 accesses and navigates up to the maximum, but all items over the maximum are not accessible. Root Directory The root directory of the CD-R or CD-RW is treated as a folder. If the root directory has compressed audio files, the directory displays as the CD label. All files contained directly under the root directory are accessed prior to any root directory folders. However, playlists (Px) are always accessed before root folders or files.