Help a new member

I have used Audacity in a lot of projects but all of those were simply meant to export small chunks of a large audio file. This is the first time I am using it to work on multiple audio files recorded for a podcast. Out of 4 main audio files, three have popping sound problem that I am somehow trying to control by using Equalizer filter after watching a Youtube tutorial. Attached is image of my Audacity composition and note that audio levels are not consistent in all files.

Is there any way to make it consistent throughout the podcast?

http://i63.tinypic.com/2yzbnko.png

Thanks and I will really appreciate if someone could respond earlier.

Regards
Syed

Could use Audacity’s (soft) Limiter to attenuate the louder sections on the on the longest track, e.g. …
suggested limiter settings.png