Invert selection in iTunes?

Question

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?

Answer 1

If they have different media types:

1. Order by Media Type
2. Select all files with the original media type
3. Delete them

If they have the same media type:

1. Create a playlist with the selected files
2. Create another playlist with both type of files
3. Create a smart playlist with two conditions:
   • playlist is "playlist from step 2"
   • playlist is not "playlist from step 1"
4. Delete content of smart playlist