How to use Janome JPX Files

I'm currently looking into Janome's JPX embroidery format: extracting stitches / threads seems quite easy, but I'm unsure about the image background which is used to layer JPX designs with graphics. Unfortunately I don't have any Janome software and therefore no experiences with this feature on my own. @Horizon users: How are you using the new file format? Feel free to comment on StitchBuddy's Facebook page.