Mercedes-Benz 2009 C-Class Operator's Manual page 184

Controls in detail
Audio system
Permissible bit and sampling rates
Fixed and variable bit rates up to
R
320 kbit/s
Sampling rates of 24 kHz – 48 kHz
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i Only use MP3 tracks with a bit rate of at
least 128 kbit/s or higher and a sampling
rate of at least 44.1 kHz or higher. Smaller
rates can cause a noticeable deterioration
in sound quality. This is especially the case
if you have activated the surround sound
function.
WMA (Windows Media Audio)
Windows Media Audio (WMA) is an audio data
compression technology developed by
Microsoft.
The audio system supports the following
types of audio files:
fixed bit rates of 5 kbit/s up to
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384 kbit/s
sampling rates from 8 kHz to 48 kHz
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The audio system does not support the
following WMA files:
DRM (Digital Rights Management) coded
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files
variable bit rates
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182
WMA Pro
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5.1 Surround
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Notes on copyright
The music tracks that you create and play
back in the MP3 and WMA format are
generally subject to copyright protection in
accordance with the applicable international
and national regulations.
In many countries, reproductions are not
permitted without the prior consent of the
copyright holder, not even for private use.
Make sure you know the applicable copyright
regulations and that you comply with these.
If you own these rights yourself, e. g. for your
own compositions and recordings, or the
copyright holder has granted you permission,
these restrictions do not apply.
Operating the CD player
The single CD drive and the CD changer have
the same controls.
CD slot
1
Load/eject button
2
Forward
3
Rewind
4
Single CD player
X
Switching to CD mode: Press button
on the audio control unit.
é
The CD display appears when you switch to
CD mode. CDs start to play automatically
when they are inserted. The following
message will appear if no CD is inserted.