What? This isn’t s product?.?.?.? I asked for software. When they say “product” i assume it means some type of hardware. This community is starting to get toxic. It mainly consists of people accusing other people of point farming.
Many Roku TVs will let you output the sound through the Roku app on your phone (I believe they call the feature “Private Listening”). In turn, you could pair your phone to the Soundcore Flare speakers and listen that way, although you may run into latency and voice sync issues.
Roku Devices (Streamers / TV) does not let Bluetooth pairing to third party BT speakers.
Pairing Bluetooth devices to Roku TV is only supported if you are using the Roku TV Wireless Speakers, or the Roku Smart Soundbar in combination with your TV. You cannot pair Bluetooth devices to your TV on its own—this functionality is not supported.
There are 3 options to pair third party BT speakers
Connect headphone output to Flare Aux-In (Have not tested how this works)
Pro – Works flawlessly Everytime,
Cons – you need to spend $35~$40 bucks for BT Transmitter
No Audio on TV speakers while headphone jack is plugged in.
Use Private Listening Mode on Roku (using the Smart phone Roku App or Compatible remote) like @TechnicallyWell suggested.
Note that Private Listening mode via Smartphone Roku App is the biggest Battery Drainer on your phone ( I Personally used this and telling from my experience on iPhone X, 8, Samsung S8/9/10) also heats up your phone. Once connected in Private Listening, pair your Smartphone to the speaker of your choice.
I still use this method for me and my wife, watching movies on Roku with Roku App on iPhone with Airpods using the “Share Audio” options of Airpods (None of Anker SoundCore Headsets support this, though the Flare series, Icon Series, Rave & Trance, and some other speaker range support the stereo pairing)
Pros – you may connect upto 4 Connections to Roku TV via Roku App on Smartphones.
Cons – Phone battery Drainer, phone heats up ( this happens on latest iOS & Android version with Latest Roku App available on app stores)