The voiced over quotes in the technology pop-ups and the wonder pop-ups correspond to speech and music on the Volumes (i.e. they're separate). Since I prefer having music be as loud as or even louder than speech, it's greatly annoying to me since the tech quote heard will be rather small and the wonder quotes will be of decent volume.
Another thing. SPELLING MISTAKES and other simple errors. One of the voiced over quotes is used in place of another technology quote which was supposed to be there but which wasn't (forgot which tech, it was in the modern/future era though).
Yet another thing. Gandhi in the Mongol scenario. The heck? Could you be any lazier?
Yet another thing. AI going for cultural victories usually stick to ONE city. How is that smart? They should make at least 2-4 cities, seriously. And technically that'll generate the culture faster for the social policies anyway.
Yet ANOTHER thing. The music, while great, is implemented poorly, and prone to being interrupted. At the start of each game, you hear (usually) the Peaceful theme of your chosen leader (i.e. America the Beautiful-esque for Washington starts). However, as soon as you meet another civ, that music cuts loose. Also, when you declare war on a civ, or they declare on you, you hear THEIR music, not yours. So if I was Washington and declared on Oda, I hear Japanese music as my troops kill the Japanese troops. How patriotic, I guess??? This just smells of bad implementation.