Official comment
Have you considered pressing the SYNC button? I know a lot of DJs are like "WHAT? NEVER! BEATMATCH BY EAR!" but I'll remind anyone who says that, carpenters no longer use hammers and hand saws to build houses - they use power tools, and the sync button is a power tool for DJs, allowing us to reduce the time trying to beatmatch, and spend more time picking better songs, playing with FX, etc.