Connect Auvio 2.1 channel soundbox to Sony Smart Tv

You have an optical audio input on the soundbox.
You probably have an optical audio output on the TV.
Connect them with a toslink digital audio cable.
Check the TV manual on how to turn on and use the optical output. You may have to change the audio output type to PCM.
You could also use the hybrid headphone/line level audio output that most Sony TVs have and connect that to the soundbox.