Play Audio File from Activated Speaker

I want to use the voice command “play rain sounds” to play a locally hosted media file called “rain sounds.mp3.” I want the media to play on the speaker from which I made the voice request.

I am connecting a speaker to my Atom. We currently have three of these set up in my house.

It looks like a number of people are having issues with playing media, with not a log of replies. If this isnt possible yet. That is fine.

It seems safe to say this is not possible yet.