Notes on playing mp3/wma – Kenwood KDC-MP6025 User Manual
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Notes on playing MP3/WMA
KDC-X679/MP6025/MP625 can play MP3 (MPEG1, 2 
Audio Layer 3)/WMA. Note, however, that the MP3/
WMA recording media and formats acceptable are 
limited. When writing MP3/WMA, pay attention to 
the following restrictions.
Acceptable media
The MP3/WMA recording media acceptable to this 
unit are CD-ROM, CD-R, and CD-RW.
When using CD-RW, do full format not quick format 
to prevent malfunction.
Acceptable medium formats
The following formats are available for the media 
used in this unit. The maximum number of 
characters used for file and folder name including 
the delimiter (".") and three-character extension are 
indicated in parentheses.
 • ISO 9660 Level 1 (12 characters)
 • ISO 9660 Level 2 (31 characters)
 • Joliet (64 character; Up to 32 characters are 
displayed)
• Romeo (128 character; Up to 64 characters are
displayed)
• Long file name (200 characters; Up to 64
characters are displayed)
• Maximum number of characters for folder name:
64 (Joliet; Up to 32 characters are displayed)
For a list of available characters, see the instruction 
manual of the writing software and the section 
Entering file and folder names below.
The media reproducible on this unit has the 
following limitations:
 • Maximum number of directory levels: 8
 • Maximum number of files per folder: 255 
 • Maximum number of folders: 50 
MP3/WMA written in the formats other than the 
above may not be successfully played and their file 
names or folder names are not properly displayed.
Settings for your MP3/WMA encoder and 
CD writer
Do the following setting when compressing 
audio data in MP3/WMA data with the MP3/WMA 
encoder.
 • Transfer bit rate: MP3: 8 —320 kbps
WMA: 48 —192 kbps
• Sampling frequency
MP3: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 kHz
WMA: 32, 44.1, 48 kHz
When you use your CD writer to record MP3/WMA 
up to the maximum disc capacity, disable additional 
writing. For recording on an empty disc up to the 
maximum capacity at once, check Disc at Once.
• Play mode may not be possible when portions of the
functions of Windows Media Player 9 or higher are used.
Entering ID3 tag
The Displayable ID3 tag is ID3 version 1.x.
For the character code, refer to the List of Codes.
Entering file and folder names
The code list characters are the only file names and 
folder names that can be entered and displayed.
If you use any other character for entry, the file and 
folder names are not displayed correctly. They may 
neither be displayed correctly depending on the CD 
writer used.
The unit recognizes and plays only those MP3/WMA 
which have the MP3/WMA extension (.MP3/.WMA).
• A file with a name entered with characters not on the
code list may not play correctly.
Writing files into a medium
When a medium containing MP3/WMA data is 
loaded, the unit checks all the data on the medium. 
If the medium contains a lot of folders or non-MP3/
WMA files, therefore, it takes a long time until the 
unit starts playing MP3/WMA.
In addition, it may take time for the unit to move 
to the next MP3/WMA file or a File Search or Folder 
Search may not be performed smoothly.
Loading such a medium may produce loud noise to 
damage the speakers.
• Do no attempt to play a medium containing a non-MP3/
WMA file with the MP3/WMA extension.
The unit mistakes non-MP3/WMA files for MP3/WMA data 
as long as they have the MP3/WMA extension.
• Do not attempt to play a medium containing non MP3/
WMA.