Additional Information
!Up to 500 folders on a USB portable audio player/USB memory can be played back.
!There may be a slight delay when starting playback of audio files on a USB portable audio player/USB memory with numerous folder hierarchies.
!File extensions such as .wma, .mp3 or .m4a must be used properly.
!Only 64 characters from the beginning can be displayed as a file name (including the extension such as .wma, .mp3 or .m4a) or a folder name.
Depending on the character sets, only the first 32 characters may be displayed.
!The text information of some audio files may not be correctly displayed.
!There may be a slight delay when starting playback of audio files encoded with image data.
The sequence of audio files on USB memory
For USB portable audio players, the sequence is different from that of USB memory and de- pends on the player.
Example of a hierarchy
: Folder
: Compressed audio file
1
2
3
4
5 
6
Level 1 | Level 2 Level 3 Level 4 |
Appendix
! | 01 to 05 represent assigned folder num- | English |
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| bers. 1 to 6 represent the playback se- |
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| quence. The user cannot assign folder |
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| numbers and specify the playback se- |
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| quence with this unit. |
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! The sequence of audio files/folders to be played back, selected by the scan play and displayed in the file name list is determined as follows:
— The sequence of files is given priority over the sequence of subfolders.
— In a folder, the sequence of audio files/ subfolders is the same as the order you copy from a personal computer to the USB memory.
However, the sequence may be altered de- pending on the settings and the operating system of the personal computer.
Also, when you select several folders/files at one time and copy to the USB memory, the expected sequence of audio files to be played back, selected and displayed may not coincide with the actual sequence.
!If you want to specify the sequence of the audio files, refer to Example of a hierarchy on this page and copy the folders/files in order.
—We recommend that you specify the file names in the desired playback se- quence (e.g., 001xxxxx.mp3 for the first, 099yyyyy.wma for 99th, etc.).
Compressed audio files
WMA
!Compatible format: WMA encoded by Windows Media Player Ver. 7, 7.1, 8, 9 or 10
!Bit rate: 5 kbps to 384 kbps (CBR), VBR
!Sampling frequency: 32 kHz, 44.1 kHz, 48 kHz
!Windows Media Audio 9 Professional, Loss- less, Voice: No
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