Appendix
Additional Information
Compressed audio files in | The sequence of audio files on |
the USB storage device | the USB storage device |
About USB storage device compatibility, refer to Specifications on page 75.
!Copyright protected files cannot be played back.
!There may be a slight delay when starting
playback of audio files on a USB storage device with numerous folder hierarchies. 
Example of a hierarchy and playback sequences
: Folder
: Compressed audio file
1 
2
3
4
5 
6
Level 1 | Level 2 Level 3 Level 4 |
For USB portable audio players, the sequence is different and depends on the player.
!01 to 05 represent assigned folder num- bers. 1 to 6 represent the playback se- quence. The user cannot assign folder numbers and specify the playback se- quence with this unit.
!Playback sequence is the same as re- corded sequence in the USB storage de- vice.
!To specify the playback sequence, the fol- lowing method is recommended.
1Create the file name including numbers that specify the playback sequence (e.g., 001xxx.mp3 and 099yyy.mp3).
2Put those files into a folder.
3Record the folder containing files into the USB storage device.
However, depending on the system environ- ment, you cannot specify the playback se- quence.
!Up to 15 000 files in a USB storage device can be played back.
!Up to 500 folders in a USB storage device can be played back.
!Up to eight tiers directory in a USB storage device can be played back. 
The sequence of audio files on the disc
!This unit assigns folder numbers. The user cannot assign folder numbers.
!Folder selection sequence or other opera- tion may be altered depending on the en- coding or writing software.
!For practical use, the folder hierarchy should have as few tiers as possible.
!Up to 999 files on a disc can be played back.
!Up to 99 folders on a disc can be played back.
iPod
iPod compatibility
!This unit supports only the following iPod models. Supported iPod software versions are shown below. Older versions of iPod software may not be supported.
—iPod nano first generation (software ver- sion 1.3.1)
—iPod nano second generation (software version 1.1.3)
—iPod nano third generation (software version 1.1.2)
—iPod nano fourth generation (software version 1.0.3)
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