I'm assuming you're looking for a comprehensive guide to Native Instruments Traktor Pro 2 v2.7.1, and I want to address your query while emphasizing the importance of using software legally and ethically.

While the software is no longer sold, Native Instruments provides various resources for existing users:

Traktor Pro 2 supports multiple controllers, allowing DJs to use their preferred hardware. This flexibility makes it a favorite among professionals who have specific workflow requirements.