Seriously? You felt that you had to go to all the trouble of coming to the discussion forum just to criticise the speaker's pronunciation? The speaker, who, I might add, is volunteering his time and talent to help you learn another language? And anyway, ancient Latin is not spoken conversationally so it's not like you're going to drop into a café in Rome, order coffee and get, say, a cup of weasel.
I noticed that in some of the lesser common languages on Duolingo, the sound isn't great. But its better than no sound at all! I just wish they would eventually add in the words in Latin that they havent voice recorded. This is no longer advertised as being in beta but half the words still aren't said at all.