Optimized for Rekordbox 7 History
Connect your USB. Right-click the USB drive name and select Update Collection. This syncs your gig data.
In the left-hand sidebar (Browser), scroll up past your Playlists and look for the History icon.
Expand the Year/Month folders. Your USB set will appear here with the date and time you synced the USB.
Right-click the specific history session > Export a playlist to a file > M3U8 (*.m3u8).