2008 MERCEDES-BENZ C-Class Format

50 Audio
Satellite radio*
Storing via Autostore
i The function automatically assigns receiv-
able channels to the presets. The channels
which were stored in the channel memory man-
ually will be overwritten in this process.
Press n if the display/selection win-
dow is active.
Select “Autostore”.
or
Select “Presets” K “Autostore” from
the SatRadio submenu.
COMAND searches for receivable
channels. A corresponding message is
displayed. The available channels are
automatically stored under the presets.
Cancelling storage procedure
Select “Cancel”.Selecting a channel from the memory
list
To call up the channel list:
In the submenu rotate ymz or slide
omp until “Presets” is highlighted.
The presets list appears.
To select a channel: Rotate ymz or
slide qmr.
To tune to the selected channel:
Press n.
or
Press a number key, e.g. 4, on the
control unit.
Displaying information
In the submenu rotate ymz or slide
omp until “Info” is highlighted.
Press n.
Information about the current program
appears.1Category
2Channel
3Artist
4Song title
You will see (if available)
the full name
additional information
Switching back to the SatRadio main dis-
play:
Slide omp.

51 Audio
Satellite radio*
Displaying service information
You can call the provider service center for
questions or releases whenever you need.
Select “SatRadio” K “Service” in the
SatRadio submenu.
The service information appears.
1Phone number of the provider,
(SIRIUS) or “Call Service Provider”
2SIRIUS ID of your satellite receiver
Slide omp to switch back to the SatRa-
dio main display.
Channel list updates
While receiving a new channel list the mes-
sage “Updating Channels” will appear.
The channel last tuned will be muted until
the update is completed. You cannot oper-
ate the satellite radio.
After completion of the update, the
Satellite radio main menu will appear.
The channel last tuned to will begin to play.Sound settings
Refer to chapter “At a glance” on how to
adjust sound settings.
Volume (
page 35)
Balance control and fader (
page 36)
Bass and treble control (
page 36)
Surround sound (
page 38)

52 Audio
CD audio/DVD audio and MP3
Permissible storage media
CD-R and CD-RW
DVD+R and DVD+RW
DVD-R and DVD-RW
PCMCIA memory card (
page 57)
Permissible file systems
ISO9660/Joliet for CD storage media
UDF for DVDs
FAT16 or FAT32 for PCMCIA memory
card with storage medium
Multisession CDs
On multisession CDs, the content of the
first session determines how COMAND
handles the CD.
If the first session, for example, contains
data in audio CD format and the second
session contains MP3 tracks, COMAND
handles the CD as a conventional audio
CD. This means that the MP3 tracks can-
not be accessed.Similarly, if the first session contains MP3
tracks and the second session contains
d a t a i n a u d i o C D f ormat, COMAND handles
the CD as an MP3 CD. Only the MP3 tracks
can be accessed.
File structure of storage medium
When creating an MP3 storage medium,
you can organize MP3 tracks into folders.
A folder can also contain additional fold-
ers. A storage medium may have a maxi-
mum of 255 folders in total. A maximum of
255 tracks and 255 folders are permissible
per folder. A maximum of 4000 tracks in
total are permissible per storage medium.
Track names and folder names
When creating an MP3 storage medium,
you can assign names to the MP3 tracks
and to the folders.
COMAND uses these names in MP3 mode
for the corresponding display. Empty fold-
ers or folders containing data other than
MP3 tracks will not be displayed by
COMAND.
If MP3 files are stored in the root directory
itself, the root directory also counts as a
folder. COMAND will then display the root
directory name as a folder name.
CD audio/DVD audio and MP3
Safety instructions
G Warning
COMAND is classified as a Class 1 laser
product. You must not open the casing.
There is a risk of exposure to invisible laser
laser radiation if you open the casing, or if
the casing is faulty or damaged.
COMAND does not contain any parts that
you are able to maintain yourself. For safety
reasons, all maintenance work must be car-
ried out by qualified technicians.
G Warning
Only carry out the following when the vehi-
cle is stationary:
Inserting a disc
Ejecting a disc
There is a risk of accident by being distract-
ed from road and traffic conditions if you
load a CD/DVD while the vehicle is in mo-
tion.
Notes on MP3 mode

53 Audio
CD audio/DVD audio and MP3
Please note the following when assigning
track names:
Track names must contain at least one
character.
Track names must have the extension
“mp3”.
A period must appear between the
track name and the extension.
i COMAND does not support ID3 tags.
Permissible MP3 formats
COMAND supports the MPEG1 audio
layer 3 format.
i In everyday speech, this format has been re-
placed by the designation “MP3”.
Permissible bit and scan rates
Fixed and variable bit rates from
32 kbps to 320 kbps
Scan rates from 8 kHz to 48 kHz
i Only use MP3 tracks with a bit rate of 128
kbps or higher and with a scan rate of 44.1 kHz
or higher. Lower rates may result in impaired
sound quality. This is particularly true if the sur-
round sound function has been activated.
Notes on copyright
The music tracks that you can create for
playback in MP3 mode are generally copy-
right-protected under applicable interna-
tional and national laws.
In many countries,the reproduction of
copyrighted material is not permitted even
if only for personal use without the express
prior consent of the copyright holder.
Please check the current copyright laws
for your country and comply with them.
These restrictions do not apply, for exam-
ple, to your own compositions and record-
ings or for recordings for which
authorization has been obtained from the
copyright holder.
Notes about audio DVD discs
COMAND can playback commercially
available, prerecorded audio DVDs that
bear the following label. You will usually
find the label on the DVD booklet, the inlay
or the DVD itself.
i Audio DVDs differ from recordable DVD-R
and DVD-RW discs.
Data on audio DVDs are stored either in
uncompressed format or in lossless com-
pressed format. The sound quality on au-
dio 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 commer-
cially available, prerecorded audio DVDs.
Please note the following information
about CDs/DVDs and pay special atten-
tion to the notes on copied and/or self-
written CDs/DVDs.
Other readable audio formats
COMAND can also read music files in the
WMA (Windows
® Media Audio), AAC (Ad-
vanced Audio Coding) and WAV (Waveform
Audio Format) formats.
i If other music files are stored in these audio
formats on a storage medium, in addition to MP3
files, the loading process may take longer before
the first track is played.

54 Audio
CD audio/DVD audio and MP3
i Discs with copy protection do not comply
with the CD audio standard and in some cases
cannot be played by COMAND.
When playing copied discs, problems may occur
with the playback.
A wide variety of discs, disc writing software and
writers are available. Due to this variety we can-
not guarantee that the system will be able to play
discs that you have written/copied yourself.
There may be playback problems with user-
burned CDs with a storage capacity of more than
700 MB. These CDs do not meet current valid
standards.
i When playing a DVD audio, it may be the
case with numerous albums that the last track
does not contain any music and COMAND
switches to the next track. This is due to the pro-
duction method and does not imply a fault with
the unit.
! Do not attach stickers or labels of any kind
to discs. They may come loose and damage
COMAND.
COMAND has been designed for discs meeting
the requirements of standard EN 60908. There-
fore, only discs with a maximum thickness of
1.3 mm can be used.
If a thicker disc is inserted, e.g. one which stores data on both sides, (DVD on one side, audio data
on the other side), this cannot be ejected and
COMAND will be damaged.
Do not use 8 cm diameter discs, not even with an
adapter. Only use round, 12 cm diameter discs.
i COMAND can play audio CDs with the high-
resolution surround format.
Only touch the discs at the edges.
Handle discs with care in order to pre-
vent malfunctions during playback.
Avoid scratching, leaving fingerprints
and dust on the discs.
Clean the discs occasionally with a
commercially available cleaning cloth.
Always wipe in a straight line from the
inside outwards, never in a circular mo-
tion.
The discs must only be labelled using
pens specially designed for this pur-
pose.
After use, put the discs back into the
box.
Protect the discs from heat and direct
sunlight.
i If the CD/DVD is printed on one side, this
side must face upwards when loaded. If neither
side is printed, the side to be played must face
downwards.
The system may not be able to play copy-protect-
ed CDs/DVDs.
Notes on CD/DVD discs
Notes on the care of
CD/DVD discs
Loading CDs and DVDs
G Warning
Only insert a CD or DVD when the vehicle is
stationary. There is a risk of accident by be-
ing distracted from road and traffic condi-
tions if you load a CD/DVD while the vehicle
is in motion.
Bear in mind that at a speed of just 30 mph
(appr. 50 km/h), your vehicle is covering a
distance of 44 feet (appr. 14 m) every
second.

64 Audio
CD audio/DVD audio and MP3
To switch to the next folder up: Se-
lect theQsymbol.
The display changes to the next folder
up.
1Disc name (if stored on disc)
2Current folder
3Folder symbolTo select a folder: Rotate ymz or
slide qmr.
Press n.
The tracks of the folder appear.
To select a track: Rotate ymz or slide
qmr.
Press n.
The track is played, the corresponding
folder is now the active folder.
i The function is only available in CD audio
mode.
CD information, including album title, artist
name and track name, is obtained from the
Gracenote
® Media Database. A version of
the Gracenote® Media Database is stored
on the COMAND’s hard drive. Access to
this database is indicated by the
Gracenote logo being displayed in the low-
er right of some audio displays.
Gracenote Media Database

65 Audio
CD audio/DVD audio and MP3
Many audio CDs contain CD text.
COMAND uses the information contained
in this text for displaying the name of the
artist, album and track.
If the audio CD does not contain any CD
text, COMAND can recognise unknown
audio tracks in CD audio mode with the aid
of the Gracenote Media Database. For this
to happen, the corresponding information
must be stored in the Gracenote Media
Database and the “Read CD Database”
function must be switched on.
If this is the case, COMAND provides the
corresponding data, such as name of art-
ist, album and track, in the corresponding
displays and lists.
If COMAND accesses the Gracenote Media
Database while reading an audio CD, the
following information is displayed:Switching ‘Read CD database’ function
on and off
Switching to CD audio mode
(

page 60).
Select “CD” K “Read CD Database”.
Depending on the previous status, the
function will be switched off C or on D.Updating the Gracenote
® Media
Database
As new music CD releases occur it is nec-
cessary to update the Gracenote Media
Database. Optimum Gracenote
®
music recognition function is only
achieved when the most up-to-date data-
base is available in your vehicle.
You can have the music recognition soft-
ware updated at an Authorized Mercedes-
Benz center by means of a DVD or, perform
the update process yourself.
i The Gracenote® Media Database is updated
at the same time as the map software
(

page 113).

66 Audio
CD audio/DVD audio and MP3
It is only possible to set the audio format in
DVD audio mode. The number of available
audio formats is dependent on the DVD.
The content of an audio DVD is called the
‘album’, which can be divided into a maxi-
mum of nine groups. A group may contain,
for example, music of different sound qual-
ities (stereo and multi-channel formats) or
bonus tracks. Each group can include up to
99 tracks. If a DVD audio only comprises
one audio format, the “Group” menu
item(s) cannot be selected.
Switch to DVD audio mode
(

page 60).
Select “DVD-A” K “Group”.
The list of available audio formats ap-
pears. A dotRindicates the format
currently selected.
To change setting: Rotate ymz or
slide qmr.
Press n.
To exit menu: Slide omp.The following options are available:
“Normal Track Sequence”
You will hear the tracks in the normal
sequence (e. g. track 1, 2, 3 etc.).
“Random Tracks”
You will hear the tracks in random or-
der (e. g. track 3, 8, 5 etc.).
“Folder” (only in MP3 mode)
The tracks in the currently active folder
and any subfolders are heard in ran-
dom order.
To select an option: Switch to CD au-
dio, DVD audio or MP3 mode
(

page 60).
Select “CD” or “DVD-A” or “MP3”.
The Options list appears. A dotRindi-
cates the activated option.
Select an option.
The option is activated. A correspond-
ing display will appear in the display/
selection window for all options except
“Normal Track Sequence”.
i The option “Normal Track Sequence” is au-
tomatically activated if you change the medium
which is currently being played or if you select
another medium. An activated option remains
active after COMAND is switched on or off.
Setting audio formatPlayback options