Find "Music"
Press the menu icon.
Press Music.
Create playlist
Press the music library icon.
Press the playlist icon.
Press +.
Press the field below Create playlist and key in the name of the playlist.
Add audio files to playlist
Press Add songs to playlist.
Go to the required audio files.
Go to the required audio files.
Press the required audio files to tick them.
When the box next to an audio file is ticked (V), it's selected.
Press Add.
Press Save when you've ticked the required audio files.
Exit
Press the Home key to return to standby mode.