Text box help: triggering sound off a single word in a text box to help students learn a foreign la

Lot depends on the verion you are using: 12 or older?Especially hyperlinks pn words lost the functionality to trigger an action like playing audio.

If you were hoping for some kind of sophisticated solution for this, or something that could be easily automated, I'm afraid Captivate simply does not have this functionality.

You can certainly have text objects such as Smart Shapes or images display words (as text) and then make these objects clickable to trigger playback of a sound file.  This is usually referred to as Object Audio. 

However, this would require that you added a separate object for each word in the sentence you were displaying. 

Alternatively, you could hyperlink specific words in a text string (also displayed in a Smart Shape) and trigger an Advanced Action that plays a sound when the hyperlink is clicked.

These are all things well within Captivate's capabilities. But my gut feeling is that you were hoping for something more than this.  Am I correct?