iTunes Music Library

You can choose any available song in your iTunes Music Library to link to a chord chart. When you tap on the "iTunes Music Library" option in the Audio Track Picker, a modal window will appear. This gives you options for browsing your iTunes Music Library. Choose a tab on the bottom to determine how to browse your songs. You can also search songs in the Songs tab.

Once you've found the song you are looking for, tap on it to select it. The song will be added the Audio Track Picker and checkmarked. This links the custom track to the currently viewed chord chart.

If you do not want to pick a song, simply tap on the Cancel button at the top.