Breaking down the pronunciation:
1) The "aoi" part of Aoibhe is pronounced as "ee". The "a" makes a long "a" sound (like in "may"), and the "o" is silent.
2) The "bh" part of Aoibhe is pronounced as "f". The "b" is silent, and the "h" creates a "f" sound.
3) Putting it together: Aoibhe is pronounced as "ee-fa". The "ee" sound is long, and the "f" sound is slightly aspirated.
Remember that pronunciation can vary slightly depending on the accent or dialect, but this pronunciation is generally accurate.