2011 Buick Enclave Owner's Manual - Page 198

7-22 . . Infotainment System Root Directory The root directory of the disc is treated as a folder. If the root directory has compressed audio files, the directory displays on the radio as the CD label. If a disc contains both uncompressed CD audio and MP3/ WMA files, a folder under the root directory called CD accesses all of the CD audio tracks on the disc. Empty Folder Folders that do not contain files are skipped, and the player advances to the next folder that contains files. Order of Play Compressed audio files are accessed in the following order: ... Up to 512 files and folders. Playlists with an .m3u or .wpl extension. Files with an .mp3, .wma, or .cda file extension. Tracks are played in the following order: . . USB Supported File and Folder Structure The radio supports: ... Play begins from the first track in the first playlist and continues sequentially through all tracks in each playlist. When the last track of the last playlist has played, play continues from the first track of the first playlist. Play begins from the first track in the first folder and continues sequentially through all tracks in each folder. When the last track of the last folder has played, play continues from the first track of the first folder. Up to 700 folders. Up to 8 folders in depth. Up to 65,535 files. Folder and file names up to 64 bytes. Files with an .mp3 or .wma file extension. AAC files stored on an iPod. FAT16 FAT32 . . ... Playlists (Px). Files stored in the root directory. Files stored in folders in the root directory. When play enters a new folder, the display does not automatically show the new folder name unless the folder mode has been chosen as the default display. The new track name displays.