I have three roku tv's in my house that also have Roku soundbars. two have roku soundbars and the third has roku streambar just for better sound. They work great together, if you don't need to see the soundbar home screen, don't use its remote, just use your roku tv remote.
Your Roku wireless speakers are being used as mains with just the roku tv. Once you add the roku soundbar you will have to pair the wireless speakers to the soundbar, now they will be rear speakers in a surround sound setup. Can't have both wireless speakers and roku soundbar pair to the roku tv, its one or the other. Since the roku soundbar replaces the built-in tv speakers. There are drowned out anyways by the roku soundbar.
Edmund
Roku Community Streaming Expert
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