You may expedite the process of finding and then replacing file names or tags.
To do so:
1) Select a file by clicking on the check in the right hand corner.
2) Select the edit button in the upper most right hand corner. It will prompt you to the 'edit content' pop up window.
3) Scroll down to find the 'Find & Replace' section.
For all words that you would like to identify and then replace with another word, type in your selections and then hit 'Apply.'