If any of (1) to (3) below applies to you, and activation of rekordbox dj has already been completed, you can use your rekordbox dj in combination with DDJ-1000 by updating rekordbox dj to the latest version.

(1) Customer purchased a product including a license key for rekordbox dj.

(2) Customer purchased rekordbox dj license key.

(3) Customer has a subscription contract for rekordbox dj.

Even if none of the above applies to you, you can use the 30-day free trial of rekordbox dj in combination with DDJ-1000 for free. For details, please see http://rekordbox.com.