Library Sync enables you to prepare tracks for your DJ performance using the same library on different devices which are logged into the same Pioneer DJ account.
There are 2 types of Library Sync: Mobile Library Sync and Cloud Library Sync.
Please see the links below to find out more.
Mobile Library Sync: here.
Cloud Library Sync: here.
You can use Library Sync with rekordbox for Mac/Windows (ver. 6) and rekordbox for iOS/Android (ver. 3).