Hi, thanks for using justanswer.com I am Cris.
You would not be able to connect the Roku directly to a set of wireless speakers. The Roku audio output comes from out from the HDMI port. The audio is then sent to the TV. From the TV you can determine where the audio comes out. You can have the audio come out the TV speakers,to a Home Theater system or even wireless speakers. The TV would need to feed the audio to the wireless speakers not wireless but through cable.
You would need a audio out cable to 3.5mm jack the wireless speakers should have a headphone jack which would connect the speakers to the TV. You can find this cable many places that carry technology equipment. There are not many TV's that have bluetooth technology so I don't believe that would be an option on the TV they have unless it is fairly recent and a top model.
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