OK -- so I've had a few comment about the kind of rice cheese I'm using. This is gluten free, casein free and soy free. I understand it might be tricky finding this stuff, but I assure you it exists. To prove it, I'm including a photo of the packaging. It clearly states gf, cf and sf. And, the ingredients indicate the same.
I buy this at a local Whole Foods and also at a local food co-op. I notice two things about this particular item that might help you find it.
First, it's not the brick of cheese, it's just the slices.
Second, this packaging also has a lot of Spanish on it. I've seen other sliced Galaxy cheeses that contain either soy or casein. This one is different.
I hope that helps and I hope you can find it.