Intro videos do not play, no audio

I just downloaded Rapidweaver and tried to look at the intro videos but they don’t have any audio and I don’t see the video either

Just tried one and it started ok for me

Thanks. I tried again, and still won’t run. What browser are you using? I have safari with my new iMac

I tried my MacBook Air with Firefox and I was able to view the tutorials. Some issue with Safari, I suppose… thanks for your reply. – jr