(Cover art container background image)
defaultImage -- Loads a "default" or background image in the cover art container
This option can be configured using the Customizer tool and is found in the "Advanced Options" area of the Customizer tool. This option can be used instead of the default coverart.jpg per directory.
Using this option will place an image behind any loading cover art images, so if there are any hiccups along the way of loading directory-based image or track based image, the image defined for this option will show.
The image defined for defaultImage will load a "background" image into the coverart container. Ongoing attempts to load cover art will load "on top of" the image defined for defaultImage. If any other cover art graphic fail to load, the image defined with this option will always be visible.
Think of this option as setting up a "fall back" graphic.
Using Cover Art