Invert selection in iTunes? I converted many media files in iTunes to be suited to iPod.
Now I have all the selected files along with the converted files (unselected).

I now want to invert selection so I can easily delete all the old files. How do I do this?
If they have different media types:


Order by Media Type
Select all files with the original media type
Delete them


If they have the same media type:


Create a playlist with the selected files
Create another playlist with both type of files
Create a smart playlist with two conditions:

playlist is "playlist from step 2"
playlist is not "playlist from step 1"

Delete content of smart playlist