Change object state based on audio playtime?
I'm creating a survey tool that has audio playing for all the text, to assist low-literacy users. The screens for the tool consist of a query and instructional sentence at the top, with responses below. Yes and No buttons are provided for the user to give their input for each response, and the desire is that those buttons highlight to indicate which button is Yes, and which is No.
The highlighting should take place whenever the audio for the instructional sentence is played, which is at the beginning of the timeline, and whenever the repeat button is pressed. The sentence is something along the lines of "Indicate if you [have had the issues shown on screen within the past 7 days], please select Yes or No for each".
I've checked the audio file in Audacity and have the start and end times for exactly when Yes and No are said. For example, the audio says "Yes" from 6.63 seconds into the audio file, until 7.06 seconds. I would like the Yes button to highlight during that time. I have been able to make it work by using "Change state of object when timeline reaches..." triggers, but that only works on the first play through.
What I need your input on, is how to create a trigger on the Audio object for the sentence above, so that the Yes and No buttons highlight every time that audio is played (basically, when the repeat button is pressed).
Thanks in advance.