How to transfer UNpurchased music from laptop to itunes?

I recently went from an Android phone to the iPhone 5s. I have all of my music saved from an SDcard to my laptop. Some music is bought some not. All files are MP3 files according to the properties but only the purchased music will sync to itunes. I have tried to manually drag the files into itunes but it drags and says it's a link and then of course does not show up in itunes. The music that won't move has no album, track number, etc listed unlike all the other music. Is there any way possible for the music to be transferred to itunes. Also in some of the music folders there's a file named musicmetadata710. This file is in some folders that are purchased music and in other folders that are unbought. The file won't open on my laptop… It's just there. Ok I think that's all. If something can be done I would love a reply if not… Fooey:/ Help

I-tunes kills all mp3 files - apple is a jealous god and demands that you buy everything.

ITunes will import an MP3 file. It converts it to a proprietary iTunes file, but it will import.

Go to "Add files to Library".It allows you to browse for the files you want to import. You can import entire folders of MP3 files at once by selecting the folder; or you can import one file at a time.

Depending on the MP3 ID Tag, it may be difficult to find the imported files (it won't be as clean as files purchased from iTunes) but they'll be there. Once imported in this manner, you can make a Playlist to make the files easier to find in the future (for example, if you import an entire album, you can make a playlist e.g. "Michael Jackson Thriller"). ITunes probably won't organize your Thriller album under "Artists-Michael Jackson" like it would if you had purchased the files from iTunes.

Try iphone transfer platinum.