If you can't hear any audio while completing a module, the issue is usually related to your device settings, browser permissions, or autoplay settings. Follow the steps below to restore sound in TTRS.
Check your audio settings
Verify your device and module settings
Before changing your browser settings, make sure:
Your speakers or headphones are connected and working correctly.
Your device volume is turned up and isn't muted.
Speech is enabled in the module settings.
If sound is still unavailable, check the settings for your browser below.
Google Chrome
Allow websites to play sound
Click the Site information icon next to the address bar.
Select Site settings.
Scroll to Additional content settings > Sound.
Under Default behavior, make sure Sites can play sound is selected.
Safari (Mac)
Enable autoplay
Open Safari.
Go to Safari > Settings for This Website while you're on us.ttrsonline.com or eu.ttrsonline.com.
Under Auto-Play, select Allow All Auto-Play.
Mozilla Firefox
Allow audio playback
If you're using Firefox, try one of the following options.
Option 1: Allow autoplay for TTRS
Click the Site information (i) icon next to the website address.
Open Protection Settings.
Go to Privacy & Security > Permissions.
Select Autoplay.
Choose Allow Audio and Video.
Save your changes.
Option 2: Disable automatic sound blocking
Option 3: Add TTRS as an exception
Open Settings > Privacy & Security.
Select Manage Exceptions under Autoplay.
Add us.ttrsonline.com or eu.ttrsonline.com.
Save your changes.
Still having trouble?
Contact Support
If you've completed the steps above and sound still isn't working, or you're using a browser not listed here, please contact our Support team for further assistance.
When contacting us, let us know:
Which browser you're using.
Whether you're using speakers or headphones.
Whether the issue occurs on more than one device.
Most sound issues can be resolved by checking your device audio settings or adjusting your browser's sound permissions. If you continue to experience problems, our Support team will be happy to help.












