Welcome to the Roku Community!
We understand that you are having an audio issue with Roku Streambar.
For us to isolate your audio issue, it would be very helpful if you could answer the following questions:
- Does the issue only occur on a specific channel or across other channels installed on your device?
- In Settings > Audio > Audio mode, what setting do you have selected? Does the same issue occur if you change the setting to Stereo, etc.?
- During playback of any content, press the * key on your remote. A menu will open on the lefthand side of the screen. Do you have any 'Volume mode' enabled here? If so, try turning this off. Does this resolve the issue?
Moreover, if the issue only happens on one channel, removing the channel and then adding it back in may help.
You can visit this Support article for detailed instructions on how to do it: How to resolve a channel playback issue | Official Roku Support
Please keep us posted and we'll continue assisting you from there.