Connect the device to a computer using the supplied USB cable.
From the phone, ensure USB Mass Storage is enabled.
From the main screen, navigate: Menu > Tools.
Tap USB Mass Storage.
From the computer, launch File Explorer or Windows Explorer or Finder.
For File Explorer or Windows Explorer, press the Windows+Ekeys (+E) using the computer keyboard.
For Finder, click the Finder icon located on the dock.
From File/Windows Explorer or Finder on the computer, create a new folder in the Music folder in Removable Disk (X:).
Removable Disk (X:) represents the SD Card installed in the device. This name may vary.
Use the computer to copy music and other audio files into the newly created folder.
For any accompanying art in JPEG format, rename the file albumart.jpg and copy into the same folder as the music files.
To further organize files, create a subfolder within music folder and copy desired files into it.