Chances are your internet connection might be a bit slow, or it's dropped out temporarily.
Have a look at the loading percentage on the right; if it's stuck at 0%, you might have internet connection issues. If it's anything above 0%, you should be able to play it fine!
Make sure your device is connected to the internet, and try refreshing or reloading the page.
You've probably got your volume turned down or off. First, there's a little volume slider on the webpage; make sure that's turned up!
Try playing something else on your device to check if you can hear it - if not, turn up your device volume.
Try playing something else in this browser to check if you can hear it - if not, check you haven't muted your browser.
If you've tried everything above and still need help, you can get in touch by emailing email@example.com or by calling 020 7739 6176.
Our current hours are 10am - 6pm Monday - Friday.