If iTunes Library Scanning is switched on in the Startup pane of Preferences, Music Rescue will compare the tracks on your iPod to the tracks in your iTunes Library. This information can then be used in several ways.
Music Rescue will place coloured dots in the iTunes Status (marked with a music note icon) column in the track lists in the main window. A green dot means that the track was found in your iTunes Library, orange means that the track wasn't found but similar tracks were, and a grey dot means no identical or similar tracks were found.
To review the similar tracks, select the track in the track list and choose "Get Item Info..." from the File menu, then click the "iTunes" tab.

You can also use this information to quickly queue or unqueue items on your iPod based on whether they are in your iTunes Library. For example, the Quick Rule below will set your copy queue to only the track Music Rescue can't find in your iTunes Library.
