Casting to Google Home, Recording with Audacity

hello all,
I searched but couldn’t get a hit, perhaps the answer is just plain “it can’t be done.” I want to be able to cast via windows 10 to a set of google chrome speakers (cast a streaming radio station) and record the audio (which tune-in windows will evidently not record on windows) using audacity. it works fine with the laptops built in speakers; but, once i start casting to google home, i cannot change the source in a way that audible will record. is it possible without going crazy getting it to work?

thank you for any help and be safe.