Windows Sound Recorder used to open literally anything - text documents, pdfs, images, executables, DLLs, and attempt to play them as audio. Photoshop files make especially interesting noises through it. I used to use it for samples. Got some great noisy stuff that way.
I have the album I made with them! Some of the tracks are solely composed of Sound Recorder playing non-audio files, but every track contains samples created that way. The quality isn't the best, this is a CD rip because I've long since lost the original files, but since it's experimental industrial noise, the audio quality doesn't hurt much I guess.
I used to do this with audacity. It's fun to open an image, and apply some audio filters to it, then export it. Makes for some interesting photo fuckery results.