Renaming Music File Help?

I have a couple music files on my iPod that put all the information (artist, album, song) in one line. I tried to rename these files by right-clicking, going to properties, and clicking on the summary tab. There are spaces for artists name, title, and stuff. I just can't fill them out, I can only fill out title. Does anyone know how to make these files display with separate lines for artist, album, and song title? I'm really OCD about this and if I can't fix it, I'll be really depresed.