A:Answer not really, no. at least, not yet. there are some hacks on the internet that involve writing code, etc., but I don't have the confidence to try that.
HOWEVER, sonos said last fall that they were going to come out with an update (over the air) to enable Alexa functionality. it was supposed to be available early this year (2017), but it hasn't been released yet. Sonos did demo the feature recently and it worked, but they said they still weren't happy with it, so they are still working to polish it up to their standards. my guess is in the next couple/few months, they'll release the update. i'm happy to wait, knowing that it won't require me to upgrade any hardware, and will only be a matter of a software update.
hope that answers your question.