Find "Music player"
Press the Menu key.
Press Music player.
Create playlist
Press the menu icon.
Press Playlists.
Press the menu icon.
Press New playlist.
Key in the name for the playlist.
Key in the name for the playlist.
Press OK.
Add audio files to playlist
Go to the required audio files.
Press the required audio files to tick them.
Press the required audio files to tick them.
When the box next to an audio file is ticked (V), it's selected.
Press the confirm icon when you've ticked the required audio files.
Exit
Press the Menu key to return to standby mode.