display MERCEDES-BENZ SLK-Class 2005 R171 Comand Manual

55 Audio
Single CD operation

Open the Single CD main menu
(page 51).

Press and hold- or,.

To stop release- or,.
The following options are available:

Normal sequence


Repeat track

Random track
Explanation of the playback options 
Normal sequenceThe tracks are played in the normal se-
quence (e.g. track 1, 2, 3 etc.).
The last track is followed by the first
track of the CD.

Repeat track

The current track will be repeated until
this function is deactivated.

Random trackThe tracks are played in random order
(e.g. track 3, 8, 5 etc.).
Changing the playback option

In the Single CD main menu
(page 51) press the
Setting
soft key.
The Settings menu is displayed.
The solid circle indicates which op-
tion is currently selected.

Press or  to select a different
option.

Press.
The option is activated. A correspond-
ing display will appear in the status bar
for all options except
Normal sequence
.
An option will remain activated even if
COMAND is switched OFF and then ON
again.
Fast forward/reverse Playback options

58 AudioMP3 operationFor example, if the first session contains
data in audio CD format and the second
session contains data in MP3 format,
COMAND will treat the CD as a conven-
tional audio CD.
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 fifty
characters. 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
In the example, the track name con-
tains six characters, followed by a peri-
od and the file extension “mp3”.
Empty folders or folders containing data
other than MP3 tracks will not be dis-
played by COMAND.

59 Audio
MP3 operation
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.
Permissible MP3 formats
COMAND supports the MPEG1
Audio Layer 3 format.Permissible bit and scan rates

Fixed and variable bit rates up to 320
kbps

Scan rates from 24 kHz - 48 kHz
.
The 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.
iCOMAND does not support ID3 tags.Tips on creating MP3 tracks iIn everyday speech, this format has
been replaced by the designation
“MP3”.
iIt 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

60 AudioMP3 operation
Open the MP3 main menu (
page 61);
or

Load an MP3 CD into the COMAND CD
drive.
The COMAND CD drive holds one CD. Lo-
cated above the display is the CD slot 3
for loading the drive (
page 16).

Insert a MP3 CD face up into the CD
slot while COMAND is switched ON.
COMAND pulls in the CD and loads the
data. It may take a while to load the da-
ta, depending on the number of folders
and tracks.
After loading, COMAND plays the CD.
Switching to MP3 mode iMP3 CDs can only be played back in
the COMAND CD drive.
Loading a MP3 CDWarning
G
In order to avoid distraction which could
lead to an accident, the driver should insert
CDs with the vehicle at a standstill and oper-
ate the audio system only when road, weath-
er and traffic conditions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate-
ly 14 m) every second.
!If a CD is already loaded, it must be
ejected before inserting the new CD.
Inserting a second CD in the slot with
another CD still loaded will cause dam-
age to the CD drive not covered by the
Mercedes-Benz Limited Warranty.

62 AudioMP3 operationIf 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 folder list

Selecting via extended folder listSelecting via folder list
Only one folder can be viewed at a time.
1Current folder

Open the MP3 main menu (
page 61);

Press or  to select a folder.

Wait approx. 3 seconds without chang-
ing the selection.
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.
Selecting via extended folder list
iOn MP3 tracks with variable bit rates,
the elapsed track time displayed may
deviate from the actual time elapsed.Selecting folders
iThe folder list only contains folders in
which MP3 tracks are stored.
iThe extended folder list only contains
folders in which MP3 tracks are stored.

64 AudioMP3 operation
For forward skipping press-;
or

For backward skipping press,.
The tracks skip immediately after
pressing one of the buttons.
On the multifunction steering wheel

Switch the multifunction display in the
instrument cluster to the MP3 display
(page 25).

For forward skipping pressj;
or

For backward skipping pressk.
The tracks skip immediately after
pressing one of the buttons. Selecting via track list
The track list contains all tracks in the cur-
rent folder. Only one track can be viewed
at a time.
1Current track

Open the MP3 main menu (
page 61);

Press or  to select a different
track.
The current track remains playing while
selecting.

Press, or wait approx. 3 seconds
without changing the selection.
The selected track is played.
Selecting via direct entry of the track
number

Open the MP3 main menu (
page 61).

Press2.
The Manual track input display ap-
pears.

67 Audio
MP3 operation

Repeat track

The COMAND will repeat the current
track until this function is canceled.

Repeat folder

The COMAND will repeat the tracks in
the current folder until this function is
canceled.
The track sequence is the same as the
Normal sequence option.

Track RandomThis option is restricted to the tracks in
the current folder. The tracks are
played in random order.

Folder RandomAll tracks on the CD are played in ran-
dom order.Changing the playback option

In the MP3 main menu (
page 61),
press the
Setting
soft key.
The Settings menu is displayed.
The solid circle indicates which op-
tion is currently selected.

Press or  to select a different
option.

Press.
The option is activated. A correspond-
ing display will appear in the status bar
for all options except
Normal sequence
.
An option will remain activated even if
COMAND is switched OFF and then ON
again.

75 Audio
CD changer* operation
1CD name or CD number
2Elapsed track playing time
3Track number/total tracks
4Track title or track number
The CD changer main menu shows the CD
title at the top and track title in the center
of the main area if the CD contains corre-
sponding text data.If the CD does not contain any CD text da-
ta, the number of the CD and the track
number are displayed instead of the name
of the CD and the track title.
The numbers 1 through 6 are assigned to
the CD compartments of the CD changer.
Available choices:

Selecting via CD list

Selecting via direct entry of the CD
number (
page 76)

Selecting via CD Selection menu
(page 76)Selecting via CD list
The CD list contains all loaded CDs. Only
one entry is visible at a time. Its name or
number is shown at the top of the CD
changer main menu (in this example:
CD 5).
Selecting CDs
iThis selection is possible only if at least
two audio CDs are loaded.

76 AudioCD changer* operation
Use or  to select another CD
from the list.

Wait approx. 3 seconds without chang-
ing the selection.
The CD is changed. The newly selected
CD is played.Selecting via direct entry of the CD
number

Press one of the 3 -  keys.
The CD changer switches to the CD
loaded in the appropriate CD changer
compartment.
Selecting via CD Selection menu

Press the
Magaz.
soft key.
The CD Selection menu appears. You
see the list of all six compartments. An entry shows the CD title if the CD con-
tains corresponding text data.
No text displayed with a CD symbol indi-
cates that the corresponding CD does not
contain any CD text data.
An entry shaded out indicates an empty
CD changer compartment.
iThe system will skip empty CD changer
compartments.
iThe CD fails to be changed if you select
an empty compartment.

77 Audio
CD changer* operation

Use or  to select a CD.
The system will skip empty CD
changer compartments.

Press.
The newly selected CD is played.
The following options are available:

Selecting via track skip

Selecting via track list (
page 78)

Selecting via manual entry of the track
number (
page 78)

Selecting via scan search (
page 79)Selecting via track skip
On the COMAND control unit

Open the CD changer main menu
(page 74).

Press-for forward skipping;
or

Press, for backward skipping.
The tracks skip immediately after
pressing one of the buttons.
On the multifunction steering wheel

Switch the multifunction display in the
instrument cluster to the CD changer
display (
page 25).

Pressj for forward skipping;
or

Pressk for backward skipping.
The tracks skip immediately after
pressing one of the buttons.
Selecting a track
iForward skipping:
The next track is played.
Backward skipping:
If the track has been playing longer
than approx. 10 seconds, the system
skips back to the beginning of the
track.
If less than 10 seconds have played,
the system skips back to the beginning
of the previous track.