If you cant transfer your library online, you can load music files from your computer to your mobile device using a USB cable
a) If your screen is locked, unlock your screen.
b) Connect your computer to your device using a USB cable.
c) If youre prompted to select a USB connection option on your device, select Media device (MTP).
d) Locate downloaded tracks/files on your computer and drag them into your device's Music folder.
e) Verify the track has transfered then click to play.
Note: If your library is not already downloaded to your computer, you'll need to download your music files
before transferring music onto your phone.