If you back up i Phone to i Tunes with encrypted password, here you will find the i Tunes backup with the lock image.
Before you start to scan such i Tunes backup, you need to enter the password (i Tunes password forgot?
Be sure that i Tunes library you plan to transfer is the latest library which covers all data files. And check "Keep i Tunes Media Folder organized" and "Copy files to i Tunes Media folder when adding to library." In the same panel, click "Change" and you are guided to select a new folder in you external drive for you to store the i Tunes library.
i Tunes library is a database which collects all of the music, playlists, movies, and other media you add to i Tunes.
i Tunes library includes two i Tunes library files (i Tunes and i Tunes Library.xml) and an i Tunes Media folder.
) Transfer the selected data file to external drive.
When you select the data categories you want to transfer to external drive, click the "Recover" button in the lower bottom right corner to transfer them.
Music can be stored along with other media on i Tunes.