In the Blood of Ancients mission, during both the intro cutscene on ESD and the final cutscene on the Flotilla, two different pieces of music play simultaneously and overlap each other, making the cutscenes extremely difficult to listen to.
ETA: Aaaaand I just saw the audio bug thread. My bad for not posting in there. Will go do that now.
"Can anyone remember when we used to be explorers?"
-- Jean-Luc Picard