PNG transparency is black

My transparent png backgrounds are coming out black when I render the game. I copied the .xnb that was created on the XNA side.

My spriteBatch Begin looks like this:
spriteBatch.Begin(SpriteSortMode.BackToFront, BlendState.AlphaBlend, SamplerState.PointClamp,
DepthStencilState.Default, RasterizerState.CullNone,
null, matrix);