Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
Update. I noticed the problem with other channels. Restarted the device and it appears to have fixed the problem. I've had sound issues before with all channels that required a restart to fix. Sounds like a device issue.