What does the a me mean and how does it function in this sentence?
It's a conjunction. It is the translation of "and" when connecting nouns together.
Why is the "i" in front of kai'a?
It marks that as the grammatical object - the thing the verb is being done to, the thing being eaten.
Thanks for your answers jdmcowan!
One more: why are there those 'ka' s in front of pipi and i'a? There is no 'the' in the English.
You've found the edge of my knowledge. I don't know the answer to that question and often get this wrong myself.