I was able to install and download the libflac8 for Ubuntu 22 from:
https://ubuntu.pkgs.org/22.04/ubuntu-main-amd64/libflac8_1.3.3-2build2_amd64.deb.html
And then installed audiorelay and so far it has been working alright.
Although I faced one issue where my laptop microphone’s input is getting turned on all the time and sent to the device. The device then starts echoing and goes into an infinite loop.
I’m getting around it by setting the audio output as PulseAudio (if you don’t have it then install it). And I turn on pulse audio and in the input devices tab, I change the microphone to Microphone (unplugged) or headset microphone (unplugged). This disabled the mic and only sends the audio output to the device. Hope this helps out someone who is facing similar issues.