display MERCEDES-BENZ C-Class 2007 W203 Comand Manual

67 Audio
MP3 CD operation
File structure
When creating a MP3 CD, you can organize
MP3 tracks into folders. A folder can also
contain additional folders.
A CD may have a maximum of 255 folders
in total.
A maximum of 255 tracks are permissible
per folder.
Mathematically a maximum of 65025
tracks would result. However, this amount
is usually not reached since MP3 requires
approx. 1 MB storage per minute recorded.Track names and folder names
When creating an MP3 CD, you can assign
names to the MP3 tracks and folders.
COMAND uses these names in MP3 mode
for the corresponding display.
Please note the following when assigning
folder and track names:
Track and folder names must contain
at least 1 character.
Track names may contain up to either
thirty or fifty characters depending on
the CD format. If a name exceeds this
character limit, COMAND will not be
able to display it in full.
Track names must have the extension
“mp3”.
A period must appear between the
track name and the file extension.
Example of a correct track name:
Track1.mp3
Empty folders or folders containing data
other than MP3 or audio CD tracks will not
be displayed by COMAND.

68 Audio
MP3 CD operation
If MP3 or audio CD 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.
Permissible MP3 formats
COMAND supports the MPEG1
AudioLayer3 format.Permissible bit and scan rates
Fixed and variable bit rates up to 320
kbps
Scan rates from 24 kHz - 48 kHzThe music tracks that you can create for
play back in MP3 mode are generally
copyright-protected under applicable in-
ternational 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.
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COMAND does not support ID3tags.
Tips on creating MP3 tracks
i
In everyday speech, this format has
been replaced by the designation
“MP3”.
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It is recommended to use MP3 tracks
with a bit rate of128 kbps or higher and
with a scan rate of 44.1 kHz or higher.
Lower rates may impair quality. This is
particularly true if the sound function
LOGIC7 Surround has been
activated.
Tips on copyright

69 Audio
MP3 CD operation
Activate the MP3 main menu
(
page 70).
or
Load a MP3 CD into the CD drive
(
page 51).Loading a MP3 CD into the CD drive is the
same as described for audio CDs.
Load a MP3 CD (page 51).
After inserting a MP3 CD into the CD drive
the COMAND loads the data. It may take a
while to load the data, depending on the
number of folders and tracks.
After loading, COMAND plays the MP3 CD.Ejecting a MP3 CD out of the CD drive is
the same as described for audio CDs.Eject a MP3 CD (page 51).
Switching to MP3 CD mode
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A MP3 CD is played in the same drive
as a audio CD. The CD drive is located
behind of the display unit (
page 52).
Loading a MP3 CDEjecting a MP3 CD

70 Audio
MP3 CD operation
Activate the Audio menu (page 40).
Press the MP3 soft key.
It may take a while to load the data
depending on the number of folders
and tracks.
If the MP3 CD is loaded, the MP3 main
menu will appear.
MP3 main menu
1Current folder
2Current MP3 track
3Track number within the current fold-
er/number of tracks in current folder
4Elapsed playback time of the current
trackIf the MP3 can not be read, the
message
CD error will appear.i
Depending on vehicle production date
the MP3 CD feature may not be
available in your vehicle.
MP3 main menu
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The MP3 soft key is visible if a MP3
CD is already loaded. If not, the
CD
soft key will appear. In this case, load a
MP3 CD first.
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On MP3 tracks with variable bit rates,
the elapsed track time displayed may
deviate from the actual time elapsed.

71 Audio
MP3 CD operation
If the MP3 tracks are organized into folders
on the CD, you can select a folder from the
COMAND control unit.
The following options are available:
Selecting via the MP3 main menu
Selecting via the folder listSelecting via the MP3 main menu
Only one folder can be viewed at a time.
1Current folder
Activate the MP3 main menu.
(
page 70).
Push the joystick to H or h to
select a folder.
Wait approx. 3 seconds.
The COMAND changes the folder and
loads the data from the new folder. It
may take a while to load the data, de-
pending on the number of folders and
tracks.
Playback of the first track of the
selected folder will begin.
The track list displays the tracks of the
selected folder.
Selecting a folder
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The folder list only contains folders in
which MP3 or audio CD tracks are
stored.
After inserting a MP3 CD, the COMAND
loads the data. After loading, you can
use this function.

73 Audio
MP3 CD operation
You can select a track:
by using G or g in the track list
with g or h
with the number keypad
with ScanIn the track list
The track list includes all tracks of the CD
or currently selected folder. Only one list
entry is visible at a time.
1Current folder
Activate the MP3 main menu
(
page 70).
Push the joystick G or g to move
forward or backward through the track
list.
Press E .
Using Skip track
Activate the MP3 main menu
(
page 70).
Forward
Press D.
The next track from the track list is
played.
Track select
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If there are tracks on the MP3 CD that
can not be read, you will not see any
error messages. The audio output will
be muted and a search will begin to the
next readable position.
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At any time during playback an
expanded view of a track title can be
displayed by pressing the
Detail soft
key.
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If the last track in a folder is playing,
the first track is selected.

75 Audio
MP3 CD operation
Ending the scan function
Scan search is running.
Press the Scan soft key.
or
Press E.
The last scanned track is played.
Activate the MP3 main menu
(
page 70).
Press and hold g or h.
To stop release g or h.On
Press J during playback.
The MP3 CD operation is stopped and
theß symbol is displayed in the status
bar. The soft keys on the left side are
greyed out in the MP3 main menu.
Off
Press J again.
Playback will resume.
The ß disappears from the status bar.
The soft keys on the left side are
selectable again.
The following options are available:
Normal sequence (page 76)
CD mix (page 76)
Repeat track (page 76)
Repeat folder (page 76)
Fast forward/reverse
Mutingi
COMAND will also deactivate if you
Press A, B, g, h
Change the volume at COMAND or
the multifunction steering wheel
Operate the joystick
Press any keypad button except #
Press j or k at the
multifunction steering wheel if the
audio menu is selected
Press any soft key.
Playback options

76 Audio
MP3 CD operation
Changing the playback option
E.g.:
Option
CD mix
Activate the MP3 main menu
(
page 70).
Press the Setting soft key.
Setting menu
Push the joystick to g or G to
select the playback mode
CD mix.
Press E.
The option is activated. The MP3 main
menu will reappear.
Explanation of the playback options
Normal sequence (normal setting)
The tracks of the current folder are
played in order on the disc.
If the current folder contains sub-
folders:
The sub-folders and their tracks are
played in order on the disc.
CD mix
All tracks of the MP3 CD are played in
random order.
Repeat track
The system repeats the current track
until you switch the function off.
Repeat folder
The system repeats the tracks of the
current folder until you switch the
function off.
View track detail
At any time during playback an expanded
view of a track title can be displayed in the
CD main menu via a separate window.
Press the Detail soft key.
To cancel
Press the Detail soft key again.
or
The window will automatically disappear in
approx. 5 seconds.
OptionSymbol
Function active_
Function not active-
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After selecting, the following playback
options are displayed on the status bar.

77 Audio
AUX operation

AUX operation
An external audio source can be
connected to the COMAND via the 1/8"
socket located inside the glovebox.
C class illustrated
11/8“ socket
Open the Audio menu (page 40).
Press the AUX soft key.
The AUX menu is displayed. The exter-
nal audio source is played back if it is
connected and switched to playback.At the COMAND, you can set the following
for the AUX operation:
Volume (page 34)
Balance control and fader (page 36)
Bass and treble control (page 37)
Sound functions* (page 37)
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For further information please contact
an authorized Mercedes-Benz Center.
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For instructions on how to operate the
external audio source, please see the
operation manual of the device con-
nected.

81 Satellite radio*
Subscribing

Subscribing
Press B to switch to satellite radio
operation.
The Satellite radio main menu will ap-
pear and displays the
Weather chan-
nel. You cannnot select any other
station.
Press the Service soft key to display
the Service information display.
The Service information display will ap-
pear.
Service information display
1Phone number of the provider,
(SIRIUS) or “Call Service Provider”
2The Electronic Serial Number (ESN) of
your satellite receiver
Contact satellite radio service provider
at the telephone number displayed in
the screen.After the connection is made:
Follow the instructions given by the
operator.
The activation process may take up to
10 minutes. If it is successful, you will
see the display with the message
Acquiring Signal... (page 82)
followed by the Satellite radio main
menu (
page 82).
Subscribing to satellite radioi
Depending on subscription status, soft
keys may or may not appear on the left
and right side of the service information
display.
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Credit card information may be re-
quired for your application.
The activation process takes up to ap-
proximately 10 minutes.
If a satellite receiver is not installed or
not properly installed:
The message
No Satellite Radio
will appear.