2010 GMC Acadia Owner's Manual - Page 210

7-22 Infotainment System Compressed Audio or Mixed Mode Discs The radio can play discs that contain both uncompressed CD audio and MP3/WMA files. If both formats are on the disc, the radio plays both file formats in the order in which they were recorded to the disc. CD‐R or CD‐RW Supported File and Folder Structure The radio supports: ... MP3 (Radio with CD and Radio with CD/USB) Format Radios that have the capability of playing MP3s can play .mp3 or .wma files that were recorded onto a CD-R or CD-RW disc. The files can be recorded with the following fixed bit rates: 32 kbps, 40 kbps, 56 kbps, 64 kbps, 80 kbps, 96 kbps, 112 kbps, 128 kbps, 160 kbps, 192 kbps, 224 kbps, 256 kbps, and 320 kbps or a variable bit rate. Radios that have a USB port can play .mp3 and .wma files that are stored on a USB storage device as well as AAC files that are stored on an iPod®. USB Supported File and Folder Structure The radio supports: ... 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 . ... Up to 50 folders. Up to 8 folders in depth. Up to 15 playlists. Up to 512 files and folders. Playlists with an .m3u or .wpl extension. Files with an .mp3, .wma, or .cda file extension. .