Balancing audio is a crucial yet often mishandled aspect of trailer editing. A common mistake is having music, sound effects, or dialogue at conflicting levels, resulting in viewers needing to catch spoken words or being distracted by overpowering background sounds. Editors should ensure that the audio mix enhances the trailer rather than competes within it. Clear dialogue, subtle yet effective sound effects, and a balanced musical score create an immersive experience. Avoiding common audio-level mistakes leads to a professional, polished trailer communicating its message effectively without technical distractions.