As long as your computer audio is working (i.e. do you have sound when you play a youtube video), zoom audio should also work. But Zoom has its own audio settings which allow you to select the input (microphone) and output (loudspeaker) separately from your computer. When those settings are different from your computer, it would essentially send the output / sound somewhere else and you wouldn’t hear anything.

To solve this, do the following:

1. Start a test meeting here: https://support.zoom.us/hc/en-us/articles/115002262083
2. You’ll be prompted to check your audio settings
3. If changing the settings in the test meeting doesn’t do the trick, please refer to this a help article from zoom on trouble shooting audio problems: https://support.zoom.us/hc/en-us/articles/201362283-Testing-computer-or-device-audio

You can run this test, and trouble shoot any time by your own and we recommend doing it before the live session starts.