When you say songs, are they music, and are you trying to put this music on a dvd? If so, what type of disc did you tell Nero you are trying to make? From your last post it looks like you meant to write "video_ts folder" and that means you told Nero you want to make a video dvd, and it can't except 2 video_ts folders. You might have to re-author if this is the case. Please provide more details, on the files, what conversion you did, and what you expect the final outcome to be.