Much time is required to load files from a USB memory device or USB hard disk (several minutes to several tens of minutes or even more).

Much time may be required if there are many folder layers or many files in the folders.

Also, much time may be required for loading files when there are files other than music files in the folders. Do not put files other than music files or folders containing files other than music files on the USB device.

For comfortable use, keep the numbers of files/folders within the following approximate limits:

-For folder browsing: 1000 or fewer files per folder

-For library browsing: 10,000 total files or fewer