Kenwood KDC-X997 Manual page 64

About the Audio file
Playable Audio files
AAC-LC (.m4a), MP3 (.mp3), WMA (.wma), WAV (.wav) of USB device
Playable disc media
CD-R/RW/ROM
Playable disc file formats
ISO 9660 Level 1/2, Joliet, Long file name.
Playable USB devices
USB mass storage class
Playable USB device file systems
FAT12, FAT16, FAT32
Even if the audio files comply with the standards listed above, playback may be impossible depending on the
type or condition of the medium or device.
Playback order of the Audio files
In the example of folder/file tree shown below, files are played in the order of number from (1) to (6).
;: folder
-: Audio file