Help! My American speech center has no frame of reference.

I am struggling with some lyrics for a song about my ancestor's Irish home. The modern Irish name is Aharney - and it comes from the Old Irish, Ath Charna; translated in a history I have read as "the ford of the heap."

This homestead, and the name attributed to it is an integral part of my family history. Can anyone tell me how both these modern Irish and Gaelic words are pronounced; Aharney and Ath Charna? Are there web services for this sort of translation?