2009 GMC Acadia Owner's Manual - Page 498

• Create a folder structure that makes it easy to find songs while driving. Organize songs by albums using one folder for each album. Root Directory The root directory is treated as a folder. If the root directory has compressed audio files, the directory is displayed as ROOT. All files contained directly under the root directory is accessed prior to any root directory folders. • All playlist files (.m3u or .pls) must be removed from disc contents. Playlists are not supported. • It is recommended that there is a maximum of 192 files on a CD-R(W) 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 and the empty folder is displayed or numbered. • It is recommended that there is a maximum of 200 files on a DVD+R(W) disc. • The files can be recorded on a CD-R(W) or DVD+R(W). • Copy protected WMA files are not supported. Scanning Compressed Audio Disc Scanning a compressed audio disc categorizes and allows sorting of songs by folder artist or album. • Select center folder/artist/album button to initiate scanning mode. The radio plays and a progress bar displays. • Background scanning occurs with the radio on and the compressed audio disc inserted but not being played. • Only the first 200 songs appears in the compressed audio music navigator. • Scanning time varies depending on the number of files and folders on the disc. 3-12 No Folder When the disc contains only compressed files, the files are located under the root folder. The next and previous folder functions have no function on a disc that was recorded without folders. When displaying the name of the folder the radio displays ROOT.