For example, if you have a playlist already on your iPhone/CopyTrans, and the playlist gets updated at some point. Dragging and dropping the new playlist into CopyTrans shows a "this playlist already exists" dialog. Please add an option to ignore this dialog and always overwrite. This would make it easier to drag and drop/update playlists all at once instead of clicking yes 100 times.
Sure, you can! Follow this guide: https://www.copytrans.net/support/how-do-i-add-music-and-videos-to-my-ipod-or-iphone/