You can play tracks on the OPUS-QUAD if they're imported from rekordbox for iOS/Android.
You can use Mobile Library Sync and Cloud Library Sync to transfer tracks from your PC/Mac or the cloud respectively to rekordbox for iOS/Android so you can play them on the unit.
*Tracks from streaming services can't be played on the OPUS-QUAD.
To connect the OPUS-QUAD with rekordbox for iOS/Android, see below.
■rekordbox for iOS
See [rekordbox.com].
■rekordbox for Android
See [rekordbox.com].