If you are on macOS Mojave or older, you have a choice. Here is why many DJs still seek out version 2.6.1:

In Traktor Pro 2.6.1, go to Preferences → Controller Manager → Device → Add → Import a .tsi mapping file for your specific controller. Many older mappings are available on the Native Instruments forum.

Native Instruments provides a dedicated repository for users who need to maintain older systems. While newer tools like primarily focus on current software, legacy versions are managed through specific support channels.

If you are a legitimate owner of Traktor Pro 2 (or the Traktor Scratch Pro 2 suite), obtaining the installer is a matter of navigating the Native Instruments support ecosystem.