I'm fairly new to Sonos, Spotify (ex-Slacker user) and just today got an Amazon Echo Dot. I had already configured my Harmony remote to work with my new Play:5, but just a few minutes ago I added the Harmony skill to the Dot. Now I can simply say "Alexa, tell Harmony to turn on the Play 5" or "Alexa, tell Harmony to turn the volume up" or "Alexa, tell Harmony to skip this song."
I have not found a way yet to request a specific song, artist, playlist yet so for now it immediately starts playing the default playlist I tied to the Harmony activity. I suppose I could add separate activities to the Harmony software, then give friendly names to each one within the Alexa software which would allow me to select various playlists.
Has anybody else tried this configuration to use the Echo with Sonos? Curious to hear what your experience has been. Still trying to determine if there is a way to select a different Spotify playlist or radio station with voice. Thanks!!!