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Welcome to the community. It looks like your Sony soundbar has an analog input, which means you could send audio from the Connect to the soundbar through a RCA to 3.5mm audio cable. The Connect has RCA audio outputs that will work with this.
The Sony soundbar has an HDMI audio output, but the Connect can't attach HDMI audio cables, so there wouldn't be an easy way to integrate the Connect into the soundbar so the soundbar plays in sync with any other Sonos speakers you have.
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