Quick Convert will convert all or just the selected tracks of the selected Playlist using your choice of available iTunes encoders, restoring your Preferences-set encoder afterwards.
Additionally, you can:
- Choose to delete and/or Trash the original tracks and/or files
- Copy all converted/imported tracks to a new playlist
- Optionally save AAC encoded tracks as M4B "bookmarkable" and re-add the converted files to the Audiobooks (Books) library
More information and download is on this page.