New User - Unable to play audio

Hello. I received a copy of Wavelab with a microphone I bought.

I have worked out how to add an audio track to wavelab, but I haven’t worked out how to play it. I have tried hitting the play button at the bottom of the screen. I’ve looked at many online tutorials and I’ve gathered that spacebar is how to play it. but spacebar isn’t doing anything for me in the scene.

I have checked that my headphones are working

Nothing happens when I hit the play button. I’ve got no idea what I am doing. I’m sure there is something simple I am missing.

Any ideas?