Ah!  I'm glad that you revived this thread, Alice; I foolishly volunteered to make a midi of Anach Cuain to fill a gap in the DT, and then got completely bogged down, being quite unable to decide which of about eight versions of the melody (and of the spelling, come to that!) was the most appropriate.  Somehow, we seem to have missed the one given here, which should do the job admirably.  The tune is also used for some versions of "The Streets of Derry" (The Maid Freed From the Gallows), incidentally.

Malcolm