See also:

Root Directory
The root directory is treated as a folder. All files contained directly under the root directory are accessed prior to any root directory folders. ...

Empty Directory or Folder
If a root directory or folder is empty or contains only folders, the player advances to the next folder in the file structure that contains a compressed audio file. The empty folder(s) are n ...

Auxiliary Devices
This vehicle may have a 3.5mm (1/8 in) auxiliary input jack and a USB port, located in the center console. Some portable audio devices such as iPods®, MP3 players, and USB storage devices can be conn ...