Hello guys from last update I have problem with my library when I add folder with songs or only song nothing happened 
I am here short video from adding songs or folders from external drive or from engine DJ software
Hey,
So you want to add files (tracks) to your Collection, not your Drive. In your scenario, you’ll only want to have the Drive tab open at the very end, so that you can eject the drive.
Once you’ve added your tracks to your Collection, as it appears you have, you do NOT drag and drop from Collection into Drive. If you want to sync all or parts of your Collection to your drive, you use Sync Manager.
When you click Sync Manager, you select Playlists from your Collection (on the left side), and make sure the right side is the appropriate drive/USB. Once you’ve selected everything you want to export, you click “Export to Drive”. After it tells you that the export completed, you go to Drive and click the Eject button to safely eject your updated drive.
Hello. I must add that I have already SC Live 4 for 2 years. I have 3 SSD drives and I made each collection in the same way, and now recently it sometimes happens that I can’t add anything to the drive, I’ve always done it using the drag and drop system and I’ve never had the track turn red or have any other problems.