2008 Mercedes CL-Class Owner's Manual - Page 116

Control systems COMAND audio CD/audio DVD/MP3 Data on audio DVDs are stored either in uncompressed format or in lossless compressed format. The sound quality on audio DVDs is therefore better than on recordable DVDs that contain MP3 data because the MP3 format uses a lossy type of compression. You cannot delete data from or record additional data to commercially available, prerecorded audio DVDs. Please note the following information about CDs/DVDs and pay special attention to the notes on copied and/or self-written CDs/DVDs. Notes about CDs/DVDs i Audio CDs with copy protection are not compatible with the CD audio standard and therefore may not be able to be played by COMAND. There may be playback problems when playing copied discs. There is a large variety of discs, disc-writing software and writers available. This variety means that there is no guarantee that the system will be able to play discs that you have written/copied yourself. There may be playback problems if you use CD-R or CD-RW type discs you have copied yourself with a storage capacity of more than 700 MB. These CDs are not compatible with currently applicable standards. ! Do not affix stickers or labels to the discs. These could peel away and damage COMAND. COMAND is designed to hold discs which comply with the IEC 60908 standard. You can therefore only use discs with a maximum thickness of 1.3 mm. If you insert thicker discs, e.g. those that contain data on both sides (DVD on one side and audio data on the other), they cannot be ejected and can damage COMAND. Do not use discs with an 8-cm diameter, even if they have an adapter. Only use round discs with a 12-cm diameter. 115