193
WMA files can contain a WMA tag
that is used in the same way as an
ID3 tag. WMA tags carry information
such as track title, artist name.
The emphasis function is available
only when playing MP3/WMA files re-
corded at 32, 44.1 and 48 kHz. (The
system can play MP3 files with sam-
pling frequencies of 16, 22.05, and 24
kHz. However, the emphasis function
is not available for files recorded at
these frequencies.)
The sound quality of MP3/WMA files
generally improves with higher bit
rates. In order to achieve a reason-
able level of sound quality, discs re-
corded with a bit rate of at least 128
kbps are recommended.
Playable bit rates
MP3 files:
MPEG1 LAYER3—64 to 320 kbps
MPEG2 LSF LAYER3—64 to 160 kbps
WMA files:
Ver7, 8 CBR—48 to 192 kbps
Ver9 CBR—48 to 320 kbps
The MP3/WMA player does not play
back MP3/WMA files from discs re-
corder using packet write data transfer
(UDF format). Discs should be re-
corded using “pre−mastering” software
rather than packet−write software.
M3u playlists are not compatible with
the audio player.
MP3i (MP3 interactive) and MP3PRO
formats are not compatible with the
audio player.
The MP3 player is compatible with
VBR (Variable Bit Rate).
When playing back files recorded as
VBR (Variable Bit Rate) files, the play
time will not be correctly displayed if
fast−forward or reverse operations are
used.
It is not possible to check folders that
do not include MP3/WMA files.
MP3/WMA files in folders up to 8 lev-
els deep can be played. However, the
start of playback may be delayed
when using discs containing numerous
levels of folders. For this reason, we
recommend creating discs with no
more than two levels of folders.
RS18193
001.mp3
002.mp3
Folder 1
003.mp3
Folder 2
004.mp3
005.mp3
Folder 3
006.mp3
MP3 player (rear seat entertainment sys-
tem)
RS18193
001.mp3
002.wma
Folder 1
003.mp3
Folder 2
004.mp3
005.wma
Folder 3
006.mp3
MP3/WMA player (front audio system)
194
The play order of the compact disc
with the structure shown on the left is
as follows:
MP3 player (rear seat entertainment sys-
tem)
001.mp3 002.mp3 . . . 006.mp3
MP3/WMA player (front audio system)
001.mp3 002.wma . . . 006.mp3
MP3 player (rear seat entertainment
system)—It is possible to play up to
253 folders on one disc.
MP3/WMA player (front audio sys-
tem)—It is possible to play up to 192
folders or 255 files on one disc.
The order changes depending on the
PC and MP3/WMA encoding software
you use.
CD R and CD RW discs
CD−R/CD−RW discs that have not been
subject to the “finalizing process” (a pro-
cess that allows discs to be played on a
conventional CD player) cannot be
played.
It may not be possible to play CD−R/CD−
RW discs recorded on a music CD record-
er or a personal computer because of disc
characteristics, scratches or dirt on the
disc, or dirt, condensation, etc. on the
lens of the unit.
It may not be possible to play discs re-
corded on a personal computer depend-
ing on the application settings and the en-
vironment. Record with the correct
format. (For details, contact the appropri-
ate application manufacturers of the ap-
plications.)
CD−R/CD−RW discs may be damaged by
direct exposure to sunlight, high tempera-
tures or other storage conditions. The unit
may be unable to play some damaged
discs.
If you insert a CD−RW disc into the
MP3/WMA player, playback will begin
more slowly than with a conventional CD
or CD−R disc.
Recordings on CD−R/CD−RW cannot be
played using the DDCD (Double Density
CD) system.TERMS
Packet write—
This is a general term that describes the pro-
cess of writing data on−demand to CD−R,
etc., in the same way that data is written to
floppy or hard discs.
ID3 Tag—
This is a method of embedding track−related
information in an MP3 file. This embedded in-
formation can include the track title, the art-
ist’s name, the album title, the music genre,
the year of production, comments and other
data. The contents can be freely edited using
software with ID3 tag editing functions. Al-
though the tags are restricted to the number
of characters, the information can be viewed
when the track is played back.
WMA Tag—
WMA files can contain a WMA tag that is used
in the same way as an ID3 tag. WMA tags
carry information such as track title, artist
name.
