About MP3 and WMA

The playable MP3/WMA file (hereafter called Audio file) and the media format has the following limitation. The Audio file, which is not conforming to the specification, may not play normally, or the file and folder names may not display correctly.

Playable Audio file

MP3	Extension	.mp3
	Format	MPEG 1/2 Audio Layer 3 file
	Transfer bit rate	8-320 kbps / Variable Bit Rate
	Sampling frequency	8/ 11.025/ 12/ 16/ 22.05/ 24/ 32/ 44.1/ 48 kHz
	Joint STEREO
	ID3 Tag (Ver.1)	Ver1.0/ 1.1 (Title/ Artist/ Album)
	ID3 Tag (Ver.2)	—
WMA	Extension	.wma
	Format	The file in accordance with Windows Media Audio (Except for the file for Windows Media Player 9 or after which applies the new functions)
	Transfer bit rate	32-192 kbps / Variable Bit Rate
	Sampling frequency	32/ 44.1/ 48 kHz
	DRM file	—
	Professional	—
	Lossless	—
	Voice	—
	WMA Tag (Content Description)	(Title/ Artist)
	WMA Tag (Extended Content Description)	—

・Do not attach the extensions to files other than the Audio file. If the extension is attached, the file, which is not the Audio file, will play and outputs a loud noise, causing damage to the speaker.

・The files with copy protection cannot be played.

・The unit may not be compatible with upgrade of compression format standard and additional specifications.

・There are times when play time is not displayed correctly depending on the Audio file recording conditions.

・Supreme is not applied for songs that have been encoded at a variable bit rate.

Playable storage media file system

CD-R/RW	File system (Windows)	ISO 9660 Level 1/2
		ISO 9660 Level 3	—
		Romeo
		Joliet
		Long File Name
	File system (Macintosh)		—
	File system (UNIX)		—
	Multi-Session		*1

・CD-RW discs which are quick formatted by the writing software cannot be used.

・When recording to the maximum CD-R/RW media capacity at once, the writing software is set to "Disc at once".

・Joliet is recommended for file system of CD-R/RW. With other file systems, the display may not be shown correctly depending on the operating conditions.

・*1 For CD-DA/ audio file mixed disc, the unit plays only the playback system recorded at the first setout.

・When the CD-R/RW recorded by CD-ROM MODE 2 (XA) format cannot be played, please record again by using CD-ROM MODE 1 writing format.

Limitation of structure for the file and the folder

CD-R/RW	Maximum number of directory levels	8
	Maximum number of folders	50
	Maximum number of files per folder	255
	Maximum number of files and folders	512

・It may take time to start playing depending on the recording conditions such as file hierarchy and folder structure.

The maximum number of characters for display

File/Folder name	64 characters (Joliet: 32 characters)
MP3 ID3 Tag	30 characters
WMA Contents property	30 characters

・Number of characters is based on byte unit.

・File/Folder name is the number of the characters including the extensions.

・This unit can display the following versions of MP3 ID3 tag: version 1.0/ 1.1

Playing order of the Audio file

・The Audio file plays in the order which is written by CD writing software. You may be able to set the playing order by writing the play sequence numbers such as "01" to "99" at the beginning of the file name.

Example

: Folder : Audio file

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