The wav files import fine but when I play the project I can’t hear them.
Are you on Windows or macOS? Also do you have Storyboard Pro 6 updated to the latest release 6.0.4, build 188.8.131.5206?
I’m on OS Catalina. I don’t if I have the latest build.
At the top of the SBP 6 interface menu bar, click Help then down to About. This will tell you the version/build you are using. Also in the Help menu you have Check for Updates.
I don’t know what type of purchase plan you are on with Storyboard Pro but it might be time to upgrade. The last supported macOS is Mojave 10.14.x. for SBP6.