Sonos added IFTTT support, and options that Zipato dont support.
We have all been waiting for Zipato to add additional functionality to the Sonos integration, well now you dont have to wait. Sonos added IFTTT support, and with it some added extras for us such as starting a playlist or stream from url. (maybe your own url voice files).
Eventually Sonos will add TTS over your Sonos system also.
Use the webhooks channel to send the http request from your controller to IFTTT and viola, done. Easy.