About Usb Devices; Playback Order Of Mp3/Wma/Aac Files (Cd-R/Rw Or Mass Storage Class); About Mp3 Files; About Wma Files - Sony CDX-GT929U Operating Instructions Manual

About USB devices

• Mass Storage Class and ATRAC Audio Device
type USB devices compliant with the USB
standard can be used. However, this unit cannot
recognize USB devices via a USB HUB. For
details on the compatibility of your USB device,
visit the Sony support website (page 30).
• Corresponding codec is different according to
device type.
– Mass Storage Class: MP3/WMA/AAC
– ATRAC Audio Device: ATRAC/MP3/WMA/
AAC
• DRM (Digital Rights Management) files other
than ATRAC may not be played.
• The maximum number of displayable data is as
follows.
Mass Storage Class:
– folders (albums): 128, files (tracks) per folder:
500
ATRAC Audio Device: ATRAC/MP3/WMA/AAC
– albums/artists/playlists/genres: 65,535, tracks:
65,535
Notes
• When using a cable, use the one supplied with the
USB device to connect.
• Do not use a USB device that is so large or heavy it
may interfere with driving operations.
• Do not leave a USB device in a parked car, as
malfunction may result.
• It may take time for playback to begin, depending on
the amount of recorded data.
• Backup of data in a USB device is recommended.
24
Playback order of MP3/WMA/AAC
files (CD-R/RW or Mass Storage
Class)
MP3/WMA/AAC

About MP3 files

• MP3, which stands for MPEG-1 Audio Layer-3, is
a music file compression format standard. It
compresses audio CD data to approximately 1/10
of its original size.
• ID3 tag versions 1.0, 1.1, 2.2, 2.3 and 2.4 apply to
MP3 only. ID3 tag is 15/30 characters (1.0 and
1.1), or 63/126 characters (2.2, 2.3 and 2.4).
• When naming an MP3 file, be sure to add the file
extension ".mp3" to the file name.
• During playback or fast-forward/reverse of a VBR
(variable bit rate) MP3 file, elapsed playing time
may not display accurately.
Note
If you play a high-bit-rate MP3, such as 320 kbps,
sound may be intermittent.

About WMA files

• WMA, which stands for Windows Media Audio,
is a music file compression format standard. It
compresses audio CD data to approximately 1/22*
of its original size.
• WMA tag is 63 characters.
• When naming a WMA file, be sure to add the file
extension ".wma" to the file name.
• During playback or fast-forward/reverse of a VBR
(variable bit rate) WMA file, elapsed playing time
may not display accurately.
* only for 64 kbps
Note
Playback of a lossless compression file is not
supported.
Folder
(album)
MP3/WMA/
AAC file
(track)