The search for a "free serial code" for Adobe Audition 2020 is a common one, but it is important to understand how modern software licensing works and the risks associated with seeking "cracked" versions. The Shift to Adobe Creative Cloud

Adobe offers a 7-day free trial of the full version of Audition. This is the best way to use the software for a quick project without any cost.

If a subscription isn't in your budget, there are powerful, professional-grade audio editors available for free that don't require risky serial codes:

Pirated versions cannot be updated. This means you miss out on critical security patches and new features that keep the software running smoothly.

Using unlicensed software is a violation of Adobe’s Terms of Use and can lead to legal issues for individuals and businesses alike. How to Get Adobe Audition Legally (and Cheaply)

An open-source, multi-track editor that is perfect for podcasting and basic sound design.