Pioneer DJ's rekordbox now supports GoogleDrive as part of its Cloud Library Sync function.
rekordbox was previously only compatible with Dropbox cloud storage, but now users can upload tracks in their libraries from rekordbox to cloud storage using GoogleDrive. This update is part of the new version of rekordbox for Mac/Windows (ver. 6.7.4).
Earlier this year, Pioneer DJ also announced a new rekordbox iOS (ver. 4.0) app, linked with streaming services including SoundCloud and TIDAL (via separate subscriptions) and with the music stored on your device.