The Aughananure enigma

So we went on a roadtrip this weekend! We went to the cliffs of Moher, Galway, Connemara and... that Castle with the really strange name.

Placenames in Ireland, for Erasmus students, they're a leap in the dark every time again. How can we ever learn how to pronounce "Aughananure", "Knockaunranny" and "Shannapheasteen"?
On my computer, I have the Longman dictionary CD-rom and when I look up a word, a voice pronounces the word immediately. I can even choose between the British and American pronunciation. A system like that for the Irish placenames would be very welcome. Or maybe, they should all be abbreviated by a syllable or two.
Just joking!