2010 Mercedes S-Class Owner's Manual - Page 179

COMAND audio CD/audio DVD/MP3 File structure on a disc When you create an audio disc, the tracks can be organized in folders. A disc may contain a maximum of 4000 tracks. The directory depth may not exceed a maximum of 8 levels. The system will ignore files in lower levels. Example of a correct track name: Track1.mp3 177 Compatible file systems and compression methods COMAND supports the following formats: RMicrosoft Windows Media Audio (WMA) V2, RMPEG1 Notes on USB storage media Do not store data other than audio data on a USB storage medium. Doing so will increase the time required to initialize the USB storage medium. A maximum of 8 directory levels with up to 4000 tracks each are supported. For information on connecting USB storage media to the built-in USB socket in the glove box see (Y page 80). V7, V8 or V9 that are not copy-proof Bit and sampling rates MP3 COMAND supports MP3 files of the following types: RFixed and variable bit rates from 32 kbit/s up to 320 kbit/s rates of 24 kHz to 48 kHz RSampling Track and folder names When you create an audio medium, you can assign names to the tracks and folders. COMAND uses these names for the corresponding display. Empty folders or folders which contain data other than MP3/ WMA tracks are not displayed by COMAND. If MP3/WMA files are saved in the root directory itself (uppermost directory on storage medium), the root directory will also be treated as a folder. COMAND will then show the name of the root directory as the folder name. You must observe the following when assigning track names: RTrack RTrack WMA (Windows Media® Audio) Windows Media® Audio (WMA) is an audio data compression technology developed by Microsoft®. COMAND supports WMA files of the following types: RFixed and variable bit rates from 5 kbit/s up to 384 kbit/s rates of 8 kHz to 48 kHz RSampling COMAND does not support WMA files of the following types: RDRM (Digital Rights Management) coded files Rvariable RLosless RWMA names must have at least one character. names must have the extension "mp3" or "wma". must be a period between the track name and the extension. bit rates Settings Pro R5.1-Surround RThere i Only use tracks with a bit rate of above 128 kbit/s and a sampling rate of above 44.1 kHz. Lower rates will cause an audible 25 MPEG Layer 3 audio-coding technology under license of Fraunhofer-Institut for Integrated Circuits (IIS) and Thomson Z Control systems Audio Layer 3 (MP3)25