Amazon Fire TV TTS and Media Control

Hi,

Can anyone tell me if the Amazon Fire TV component supports TTS or play an alarm mp3/wav? I have just replaced a Roku with an Amazon Fire TV, mainly so that I can use PLEX DVR in the bedroom.

I was using the Roku to play an alarm when there’s an intruder. I could always play the file from Plex if that’s possible too?

Thanks