I bought 2 speakers for the sole purpose of playing audible books on them at the same time in different rooms. The software was terribly buggy to begin with but i was able to get to work most of the time. But now, for the past few months, speaker groups have been disabled all together! I can't return the speakers now so I'm left with 2 dumb speakers instead of 2 smart speakers 😡 PLEASE DO SOMETHING GOOGLE!!