When I saw Eric Rigler several years ago (temporarily filling in for Battlefield Band's Iain MacDonald during the beginning of an American tour) He said that he chose to use the Uillean pipes because they evoked the sound and feel that he wanted for the movie. I can't pick too many arguments with music that is doing it's job. I like that post earlier, about categories being for Scholars... or, to quote Eric Rigler himself on the subject, "I knew the Scots would scream about it, but what the hell". I enjoyed both the movie and the music - isn't sharing styles and allowing change and evolution part of the folk tradition?