Serato DJ Pro 2.5.9 was a significant point-release in the software's history, primarily known for solidifying support for and macOS Big Sur . While newer versions like Serato DJ Pro 3.3.5 now offer advanced features such as Spotify Premium integration and real-time stem separation, 2.5.9 remains a reliable "legacy" choice for users on older operating systems. Key Features of Version 2.5.9