Audio problem: When Aetius first displays the Roman legions to Attila, the soldiers are marching out of step with the beat of the drums. Also, at the wedding of Attila and Ildico, the beat of the music is very much out of sync with the dancing and hand-clapping.
Day of Days - S1-E2
Audio problem: When Easy are attacking the 88 battery, in the scene where Buck scouts out what's ahead of him before throwing grenades, you can see a soldier holding an MP40 (machine pistol), who fires one shot with the sound effect of a Kar98 rifle. (00:31:50)