Here's a mock-up of what I've got for the front and back:
I took the cover image (PaulHemmings-630.jpg), stretched out a slice of the background to do a poor man's composite and added the amplifier (from PaulHemmings-559.jpg, I think) in the bottom left corner.
Then, when you open the CD wallet, it looks like this:
You can see I took the background of the cover image and blended into the background of the inside image (PaulHemmings-289.jpg).
Then when you open up all three panels, the inside looks like this:
I went B&W with a blue tint for the inside image (PaulHemmings-289.jpg) and added the amplifier again.
The outside looks like this: