KC4YOZ has Amatuer Radio Newsline downloading and playing on his Dstar G4KLX/Western Dstar image mashup for the Raspberry pi. IT’s a automated deal, maybe you could contact him to see how he did it. It does it with a MP3
Not sure about the legality, off the top I’d say it’s not legal for your purpose of what you’re wanting to do. However that’s my guess off the top with zero research on Part 97, a quick read of the rules may help you figure that out. At bare minimum the hotspot obviously would be in a “beacon” status with your call.
I’m looking forward to my 7 year old getting his license soon. I haven’t figured out how to dupe Meghan into getting licensed. She is a hard nut to crack. I think she is proud to be a non-ham. I hope to have a licensed son or two!