2006 MERCEDES-BENZ SLK-Class audio

60 Audio
MP3 operation
For 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.
The root directory may have a maximum of
255 entries in total. (folders or tracks)
A CD may have a maximum of 255 folders
in total. A maximum of 255 tracks are per-
missible 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:
Per folder a maximum of 1800 charac-
ters are available for title and folder
names combined.
Exceeding this number, COMAND can-
not display all titles and folders.
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.

61 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.
i
COMAND does not support ID3 tags.
Tips on creating MP3 tracks
i
In everyday speech, this format has
been replaced by the designation
“MP3”.
i
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

62 Audio
MP3 operation
Open the MP3 main menu (page 63);
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
i
MP3 CDs can only be played back in
the COMAND CD drive.
Loading a MP3 CD
WarningG
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.

63 Audio
MP3 operation
Press.
COMAND ejects the CD.
Remove the CD from the slot.
If you do not remove the CD from the
slot, COMAND will automatically pull it
back after approx. 7 seconds.
Open the Audio main menu
(
page 40).
Press the MP3 soft key.
COMAND loads the MP3 CD data. This
may take a while depending on the
number of folders and tracks.The MP3 main menu appears. You will
hear the last track played.
1Current folder
2Current track
3Elapsed track time
4Track number within the current fold-
er/number of tracks in current folder
Ejecting a MP3 CD
MP3 main menu
i
The MP3 soft key will only appear if an
MP3 CD has been loaded.

64 Audio
MP3 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 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 63);
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
i
On MP3 tracks with variable bit rates,
the elapsed track time displayed may
deviate from the actual time elapsed.
Selecting folders
i
The folder list only contains folders in
which MP3 tracks are stored.
i
The extended folder list only contains
folders in which MP3 tracks are stored.

65 Audio
MP3 operation
In the MP3 main menu (page 63),
press the
Folder soft key.
The extended folder list appears.
Press or  to select a folder.
Press.
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.The following options are available:
Selecting via track skip
Selecting via track list (page 66)
Selecting via direct entry of the track
number (
page 66)
Selecting via scan search (page 67)
Selecting via track skip On the COMAND control unit
Open the MP3 main menu (page 63).
Selecting a track
i
Forward skipping:
The next track is played.
i
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.


66 Audio
MP3 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 27).
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 63);
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 63).
Press.
The Manual track input display ap-
pears.

67 Audio
MP3 operation
1Number of tracks in the current folder
(10 tracks)
Example entry: Track 1
Press.
Example entry: Track 10
Press and  in quick succession.
Wait approx. 3 seconds after entering
the number.
The selected track is played.
Selecting via scan search
Scan search is characterized as follows:
Scan search plays each track in the
current folder for approx. 8 seconds.
Scan search can be ended manually.
Scan search automatically stops at the
track listened to before the scan
search was started.Starting scan search
In the MP3 main menu (page 63)
press the
Scan soft key.
The scan search starts.
i
It is not possible to enter a number
greater than the number of tracks in
the current folder.
i
The scan search will not function if the
current folder only contains one track.
When you start scan search, playback
option
Normal sequence (page 68) is
activated automatically.
Therein scan search is restricted to the
current folder.