This is a quick test solution that combines the Spine XNA runtime (https://github.com/EsotericSoftware/spine-runtimes) with a tile engine to create a simple platformer.
It's a VS2012 solution; I used these instructions to get XNA GS4 installed in 2012: http://stackoverflow.com/questions/10881005/how-to-install-xna-game-studio-on-visual-studio-2012
The solution contains a standard XNA project as well as a Monogame Windows (DirectX) port.
I have included the Monogame DLLs that I used, you should be able to resolve missing references with them.
The Spine animations used are the two default SpineBoy anims (Walk, Jump) as well as a quick Crawl anim that I knocked together (I am not an animator!).
Tweet me @garethiw.