How to modify song names on itunes 11?

I have some downloaded music on my itunes and i can't figure out how to change the name and album of the song. I knew how to do it on the old itunes but it doesn't work the same on itunes 11. When I looked on the apple website before it said to select on the song and click enter to edit but that just made the song play. When i go to get info for the song it is greyed out. Is the any other way to do it. When transfering my music to my knew computer it already deleted like 200 of my songs and i'm trying to get some of them back. thank you.