Sony CDX-GT20W Manual

• ID3 tag versions 1.0, 1.1, 2.2, 2.3 and 2.4 apply to

MP3 only. ID tag is 15/30 characters (1.0 and 1.1),
or 63/126 characters (2.2, 2.3 and 2.4). WMA tag
is 63 characters.

Playback order of MP3/WMA files

Notes
• When naming an MP3/WMA file, be sure to add the

file expansion “.mp3” / “.wma” to the file name.

• During playback of a VBR (variable bit rate) MP3/

WMA file or fast-forward/reverse, elapsed playing
time may not display accurately.

• When the disc is recorded in Multi Session, only the

first track of the first session format is recognized
and played (any other format is skipped). The
priority of the format is CD-DA, ATRAC CD and
MP3/WMA.
– When the first track is a CD-DA, only CD-DA of the

first session is played.

– When the first track is not a CD-DA, an ATRAC CD

or MP3/WMA session is played. If the disc has no
data in any of these formats, “NO MUSIC” is
displayed.

Notes on MP3
• Be sure to finalize the disc before using on the unit.
• If you play a high-bit-rate MP3, such as 320 kbps,

sound may be intermittent.

Notes on WMA
• Files made with lossless compression are not

playable.

• Files protected by copyright are not playable.

About ATRAC CD

ATRAC3plus format

ATRAC3, which stands for Adaptive Transform
Acoustic Coding3, is audio compression
technology. It compresses audio CD data to
approximately 1/10 of its original size.
ATRAC3plus, which is an extended format of
ATRAC3, compresses the audio CD data to
approximately 1/20 of its original size. The unit
accepts both ATRAC3 and ATRAC3plus format.

ATRAC CD

ATRAC CD is recorded audio CD data which is
compressed to ATRAC3 or ATRAC3plus format
using authorized software, such as SonicStage 2.0 or
later, or SonicStage Simple Burner.
• The maximum number of:

– folders (groups): 255
– files (tracks): 999

• The characters for a folder/file name and text

information written by SonicStage is displayed.

For details on ATRAC CD, see the SonicStage or
SonicStage Simple Burner manual.

Note
Be sure to create the ATRAC CD using authorized
software, such as SonicStage 2.0 or later, or
SonicStage Simple Burner 1.0 or 1.1.

If you have any questions or problems concerning
your unit that are not covered in this manual, consult
your nearest Sony dealer.

Maintenance

Replacing the lithium battery

Under normal conditions, the battery will last
approximately 1 year. (The service life may be
shorter, depending on the conditions of use.)
When the battery becomes weak, the range of the
card remote commander becomes shorter.
Replace the battery with a new CR2025 lithium
battery. Use of any other battery may present a
risk of fire or explosion.

RM-X151 (CDX-GT200 only)

RM-X114

Folder
(album)

MP3/WMA file
(track)

MP3/WMA

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