there used to be a download on the FVK website (way way wayyyy back in the archives) and it used to come with the itunes copy of In Grandomina. It'll be availiable on the Obsidian Bond site though!!
Nah they have never played with him. Might just have been from an interview saying they like him or what to play with him or something idk. But they definitely havent played with him at all.