How do I keep my music playing over me talking in a video? Thanks

Hi there, how do i keep my music playing over my talking video clip. Every time I add a video clip my music stops. I'm sure it's something simple.

Many thanks

Cathy.

Can you tell me what program are you using? Also, you might want to reach out to NCh tech team as well: https://www.nch.com.au/support/index.html&nbsp;