Media
The media capable of playing MP3/WMA include CD-R and CD-RW discs. Compared to the CD-
ROM media commonly used for music discs, CD-R and CD-RW discs are fragile in high
temperature/high humidity environments and one section of the CD-R and CD-RW may become
incapable of playback. Fingerprints or scratches on the disc may prevent playback or cause skipping
during playback. Sections of a CD-R or CD-RW may deteriorate if left inside a vehicle for long
periods of time. It is also advisable that CD-R and CD-RW discs be kept in a light-blocking case
because the discs are vulnerable to ultra-violet light.
Format of Discs
The format of discs to be used must be ISO9660 Level 1 or Level 2.
The control items for this standard are as follows:
• Maximum directory layers: 8 layers
• Maximum characters for folder names/file names: 32 (including "." and 3 letter file extension)
•
Allowable characters for folder names/file names:
A~Z, 0~9, _ (underscore)
•
Maximum number of files on a single disc: 256
• Maximum folders this main unit can recognize: 192*
*: A root directory is counted as one folder.
File Names
Only files with the MP3/WMA file extension ".mp3" / ".wma" can be recognized as MP3/WMA and played.
Be sure to save MP3 files with the ".mp3" file extension. Be sure to save WMA files with the ".wma" file
extension. The "MP" letters of the file extension will be recognized whether entered in upper case or
lower case.
CAUTION
If the ".mp3" / ".wma" file extension is attached to a file other than an MP3/WMA file, that file will be
mistakenly recognized by the main unit as an MP3/WMA file and played, resulting in loud noise
output that can damage the speakers. Be sure to avoid attaching the ".mp3", ".wma" file extension
to files that are not MP3/WMA files.
F2
Root directory (F1)
F158
Folder 2
Folder 158
Folder 159
F192
Folder 192
001.mp3
002.mp3
003.mp3
004.txt
005.mp3
001.mp3
002.mp3
F159
[Configuration example for CD supporting MP3/WMA]
Number of files possible on a single disc is 256.
Files aside from MP3/WMA files (Example: 004.txt) also count as single files.
