Networking Music and Video 2021

[Iron E]

So I'm looking to upgrade the 1998 Kenwood stereo speakers to something a bit more 2021... sans mask

I would like to add a monitor for Movies and a stereo that plays to 3 locations - V-berth, Saloon, Cockpit... Independently or All

My Wants are:

• Bluetooth Speakers for sounds (I want extremely good clear sounds).
• Stereo with Offline Downloadable capabilities for Amazon and Spotify Playlists.
• Screens/Monitors with Amazon and Netflix Downloadable (App) capabilities for watching movies offline.

BONUS - It would be great to Network everything and run it all from 1 place like from a Microsoft Surface if that's even a possibility.

Please let me know what you've got.
What works/what doesn't... Thanks!