If you just need to edit audio and don't want to deal with legacy serial numbers, consider these:
A very clean, fast, and free alternative that feels a bit more like Sound Forge’s interface. sound forge audio studio 12 ver126 64 bit serial number link
It now supports 64-bit VSTs and is the gold standard for free editing. Tenacity: A privacy-focused fork of Audacity. If you just need to edit audio and
Searching for specific serial numbers (like "ver126 64 bit serial") usually takes you to sites that look like they’re from 2005. Here’s why those are a bad idea: Searching for specific serial numbers (like "ver126 64
Are you trying to recover a lost serial number from an old purchase, or
Modern software uses online "phone home" activation. A leaked serial number is usually blacklisted by the Magix servers within hours.
Pirated versions miss out on the stability patches that make the 64-bit version worth having in the first place. How to Get it Legally (and Cheaply)