Importing to Music Section From iTunes Section.

I always back up my iTunes library to DVD-R and really like using DL's "location in building" feature to keep track of which items are on which back up DVD's.

Is there anyway to import my iTunes music from the iTunes section to the Music section so I can record the back up location and delete from my iTunes library.

I have over 40 GB of music and it's just too much to try to sort through when I don't regularly listen to most of it. But I would like to be able to easily find it when I do want to listen to it again.