The point of it
This function lets you see the video translations for the context you have selected, for example when studying the translation techniques.
How to do it
If you choose the menu options View | Show related texts for any given concordance line, you get to see the context in all the languages for which you obtained transcripts:
The Al Gore text shows in English, Portuguese, Spanish and Farsi.
but Ken Robinson comes with English, Portuguese, German, French, Japanese and Russian.