You can get Martin Carthy recordings in the States (at Andy's Front Hall, for instance), but you'd have to get the "Chronicles" set, which, although worthwhile, is a chunk of money if you want just one song. John Roberts also does "Our Hamlet" (Carthy's anglicised version of "Oor Hamlet") on "A Present From the Gentlemen", which you'll find at Andy's (under John Roberts & Tony Barrand), or you can get it direct from Golden Hind Music.