->Option one:
I really don't understand what you exactly asking about. If you want to show image with background audio then, you can start both simultaneously. So that the UI display the image and in background the audio will get started. But make sure on how to get rid of that.
-> Option two:
I googled reg what you asked, and i found some basic tutorials which can able to merge audio and image files together. Go-through the following link: Link from stackOverFlow, Sample code. Hope this will help you out. If my answer is wrong, kindly rectify me. Thanks.