This is the audio i used and as you can see, i dipped the volume up and down so you could hear the interview but with the music still in the background. You can clearly see when the interview is taking place on the screen as the bar is nearly at the bottom of the sequence which means you can only just hear it when Andrew Stammers speaks. You can then see when that part of the interview end as the bar rises to its normal space. As you can just see at then end of the screenshot, i had to use the the audio files twice so i had to find a good part to continue it!