Conditional fade?

I'm trying to have episode/series/movie information fade into view when a list item remains selected for 2 seconds. IE: it remains hidden whilst scrolling though, but fades in if you pause on something, then hides again if you move on.

I have added a delayed fade to the control group no worries, but am not sure how to link it to the list item. I presume a condition of some sort, but can't find any documentation. Any suggestions?