Thanks for following up and providing the information.
If I understand it correctly that your new Roku Voice Remote is not commanding/waking your Roku Audio device, is that correct?
Is your Roku Fast TV Start enabled? If not. You can enable Fast TV Start on your Roku TV at any time using the instructions below:
- Press the Home button on your Roku TV remote.
- Scroll up or down and select Settings.
- Select System, followed by Power.
- Select Fast TV Start.
- Highlight Enable 'Fast TV Start', and check the box to enable it.
Here's a link to our support page to find out more about the feature: How to listen to music when the screen on your Roku TV is off | Official Roku Support
Please try doing this and see if it helps with what you're experiencing.