2008 GMC Envoy Owner's Manual - Page 216

Using an MP3 MP3/WMA Disc MP3/WMA Format If you burn your own MP3 disc on a personal computer: • Make sure the MP3 files are recorded on a CD-R disc. • Standard audio, MP3 files, and WMA files can be mixed on one CD. • Make sure playlists have a .mp3 or .wpl extension, other file extensions might not work. use more disc memory space than necessary. To conserve space on the disc, minimize the length of the file, folder, or playlist names. An MP3 CD that was recorded using no file folders can also be played. The system can support up to 11 folders in depth, though, keep the depth of the folders to a minimum in order to keep down the complexity and confusion in trying to locate a particular folder during playback. If a CD contains more than the maximum of 253 folders, 50 playlists, 20 sessions, and 949 files, the player lets you access and navigate up to the maximum, but all items over the maximum are played. Root Directory The root directory is treated as a folder. If the root directory has compressed audio files, the directory displays as F1 ROOT. 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. • Files can be recorded with a variety of fixed or variable bit rates. Song title, artist name, and album is available for display by the radio when recorded using ID3 tags version 1 and 2. • 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. 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. • Make sure to finalize the disc when burning an MP3 disc, using multiple sessions. It is usually better to burn the disc all at once. The player is able to read and play a maximum of 253 folders, 50 playlists, 20 sessions, and 949 files. Long file names, folder names, or playlist names may 3-82