Audience Feedback: Audio Play Buttons Too Small

Hello,

I just built and piloted my first course in Rise for an audience that is used to traditional training formats. We use voice-over in several sections, but it seems learners had a hard time locating the play button, preventing them from advancing in the course. 

Any suggestions on how we can make the audio buttons more visible? Or alternative ways we could build in the audio?

Thanks so much!