The playback order of the mp3 files – Sony CDP-CX455 User Manual

Page 4

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US

The playback order of the MP3 files

The playback order of the folders and files is as
follows:

Notes

• A folder that does not include an MP3 file is skipped.
• When you insert a disc with many trees, it takes a longer

time to start playback.
We recommend that you make only one or two trees for
each disc.

• Maximum folder number: 150 (including root folder and

empty folders)

• Maximum total number of MP3 files and folders: 300
• The CD player can play the MP3 files in a folder whose

depth in the folder tree is up to 8.

Tip

To specify a desired playback order, before the folder or file
name, input the order by number (e.g., “01”, “02”), then
record contents onto a disc. (The order differs depending on
the writing software.)

Note on playback of MP3 files

Depending on the encoding/writing software, recording
device, or the recording media used at the time an MP3 file is
recorded, you may encounter such problems as disabled
playback, sound interruptions, and noise.

*

1

ISO 9660 Format
The most common international standard for the
logical format of files and folders on a CD-ROM.
There are several specification levels. In Level 1, file
names must be in the 8.3 format (no more than eight
characters in the name, no more than three
characters in the extension “.MP3”) and in capital
letters. Folder names can be no longer than eight
characters. There can be no more than eight nested
folder levels. Level 2 specifications allow file names
up to 31 characters long.
Each folder can have up to 8 trees.
For Joliet or Romeo in the expansion format, make
sure of the contents of the writing software, etc.

*

2

Multi Session
This is a recording method that enables adding of
data using the Track-At-Once method. Conventional
CDs begin at a CD control area called the Lead-in
and end at an area called Lead-out. A Multi Session
CD is a CD having multiple sessions, with each
segment from Lead-in to Lead-out regarded as a
single session.
CD-EXTRA: A format in which CD-DA (audio) data
are recorded in the tracks of session 1 and computer
data in the tracks of session 2.
Mixed CD: A format in which computer data are
recorded in the first track and CD-DA (audio) data in
the following tracks within a session.

Notes

• With formats other than ISO 9660 level 1, folder names or

file names may not be displayed correctly.

• When naming, be sure to add the file extension “.MP3” to

the file name.

• If you up the extension “.MP3” to a file other than MP3, the

unit cannot recognize the file properly and will generate
random noise that could damage your speakers.

• The following discs take a longer time to start playback.

– a disc recorded with complicated tree structure.
– a disc recorded in Multi Session.
– a disc to which data can be added (non-finalized disc).

Cautions when playing a disc that is recorded in Multi
Session

CD-DA (audio) data or MP3 files stored on a Multi Session
CD may be subject to some restrictions on playback.

– If the disc begins with a CD-DA session, it is recognized

as a CD-DA (audio) disc, and playback continues until an
MP3 session is encountered.

– If the disc begins with an MP3 session, it is recognized as

an MP3 disc, and playback continues until a CD-DA
(audio) session is encountered.

– The playback range of an MP3 disc is determined by the

tree structure of files produced by analyzing of the disc.

– A disc with a mixed CD format will be recognized as a

CD-DA (audio) disc.

1

2

6

3

5

7

1

2

6

7

4

8

3

5

8

4

9

Folder (album)

MP3 file (tracks)

Tree 1

Tree 2

Tree 3

Tree 4

Tree 5

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