Introduction to Music Library
The user can add music to their video from the free music library. The library contains free music from various genres to use eg. as background music.
Adding music to the timeline
A music file from the library can be listened to by clicking the
play icon at the right end of the file box, and the file can be added to the timeline by clicking the 
plus icon next to it - same as any other audio file.
Once added, the music file appears on the timeline on the Audio1 track.
Any subsequent music file from the library will also appear on Audio1, to the right of the previous one.
Moving music files
Files in the music library cannot be moved, added to or deleted. To add audio files, they must be uploaded to My Media or Brand Media.
Music added from the library can be moved and edited the same as any other audio file on the timeline.