Hi @Dleine! Thanks for posting and welcome to community.
The Meta Portal only supports station playback. You can check out our help page for a complete list of Plus supported device or Premium supported device.
It is possible to use the Amazon Alexa integration within the Portal to access any Premium content on your account. For more information on how to set-up Alexa on your Portal I would reach out to Meta Support.
Hope this helps to answer your question.
