EXR files importer/processor

Hi!
Has anyone a good tutorial to make an importer for *.exr files ?
Or better, an importer/processor ? I have a lot: > 50, of textures in this format, and I won’t convert them to png manually.

We use FreeImage to provide support for importing images, and it claims support to read EXR images. Have you tried adding the EXR images to a content project? I don’t have any EXR images and it’s not a content format that I have seen anyone use, so I have not been able to test it.