You need the program Audacity for this project, official download link here.
Before you take these steps, be sure that both photos are the same size, and format (BMP)
Here and the 2 photos I am combining in this example.
Here is the outcome.
There are built in effects in audacity for making different sounds, but if you use the correct ones, they manipulate the photos in interesting ways. Here is another blog post explaining how to use these effects.
