I'm interested in this as well!
Also while I'm at it, does anyone know if there is a way to enable the AOSP lockscreen (w/ album art background) as well as the AOSP theme? I'm fine with the Sony UI, but I'd prefer the AOSP look and feel.
This module for the album art unfortunately doesn't seem to work with neither the Sony lockscreen nor the AOSP one (enabled with Serajr Xperia Xposed or GEM Xperia Xposed).