You can connect the NOW Music app to most Bluetooth speakers via the bluetooth connection settings on your Phone or tablet. This includes Amazon Alexa, Bose, Sonos, Apple Homepod and other major speaker systems.
However you will not be able to use the voice commands on these devices quite yet, this is a feature we are currently working on and will update when it's ready to go!
We are not currently integrated into the Sonos App but we know this is something that would be really useful! Please tweet @nowmusic and include @sonos requesting this, hopefully with enough support Sonos will help bring us onto their platform!