Alexa voice control

Any way to enable Amazon Echo as a Roon output, in the same way an Echo can play music from Spotify etc.? I.e. set Roon as a default music source? That should enable Alexa to better understand words spoken during playback? Not ideal for that top quality playback via a dedicated system but a good first step and fine for casual multi-room listening, perhaps via the phono socket or Bluetooth?