iPod Exclaimation Marks and Deletion

[CommonMan]

I purposely deleted a folder that contained thousands of unwanted songs. Now, when I view my iTunes, it shows all these songs with exclamation marks to the left. Is there any way I can get rid of all these songs - I mean I don't want them to show up in my iTunes since they are no longer available to play so, rather than deleting each one - one by one, can I just get rid of them all at once?

 

[xUKHCx]

Remove Dead Tracks or Super Remove Dead Tracks

 

[mad jew]

For next time, it's probably easier to delete the tracks from within iTunes rather than through Finder or Explorer.