Audio cracking when exported

[generalhavok]

Ive been working on a short video, and everything is fine in the movie, mp3's play fine and all, but when I export it, no matter what codecs I choose (only have standards for audio) it starts to crack really bad on the audio.

The song starts low and theres hardly any noise in the video (system of a down - x, to be specific) and once it gets loud its all cracking in it, even worse when you hear the audio from the clips.

Any suggestions? Im thinking I need a audio codec or something, im stuck

 

[Akribie]

Safer to use WAV at the same sample rate as the project. Worth converting your MP3 before brining them to the timeline.