Since Amazon have opened up the video skills api - it’s super easy to add support to Alexa - so for example - I could use Alexa to search my Plex library and have a ‘hands-free’ experience once the app was running on my TV.
Please add it !
already implemented
https://support.plex.tv/hc/en-us/sections/115000744268-Alexa-Voice-Control
Early 2021 clean-up: implemented
