By default, when embedding a media file in the Rich Content Editor, the Add menu displays media files from your selected source [1].
To change the file type, click the Type drop-down menu [2].
To sort image files by date added or alphabetically, click the Sort by drop-down menu [3]. To search for a file, enter the file name in the Search field [4]. You must enter at least three characters for search results to display.
Click the media file to embed [5].
Note: The file will flash before it embeds in the Rich Content Editor.