Officially, Pioneer (now AlphaTheta) never released drivers or a mapping for Rekordbox for the DDJ-T1. For years, owners have been told their controller is a "paperweight" on modern software.
This article is the antidote to that myth. ddj t1 rekordbox mapping
The transforms an obsolete Traktor relic into a professional-grade Rekordbox controller. For the price of a used DDJ-400, you get a metal chassis, CDJ-sized jogs, and a true 4-channel mixer. The only downsides are the lack of official support for the sound card on modern Macs and the initial learning curve of the MIDI mapping. you get a metal chassis
Introduction: The Orphaned Workhorse