TV
The Amazon 65" Fire TV (PDF manual) has an Apple TV 4K that you can Airplay/mirror (name is 845a Studio) to as needed for presentations and/or use for music/YouTube/etc.
Turn on TV with Apple TV Remote.
Once tv is on, press volume up and you will see audio change from 0 to the last volume setting.
TV stand is on a rolling stand and be moved as needed. Just please return to original area before leaving.
Music
Download the Sonos app (Google Play/iOS) and once you're connected to the Wifi (SSID: 8:45a) you should be able to play music.
There are two Sonos speakers in the space:
One is located under the TV which is the Sonos Beam and labeled as "Lobby" if/when you're selecting the speaker on the app. If you have an Apple device, you can Airplay to it (name is 845a Studio).
The second speaker is located underneath the vanity/makeup table near the shoot space and is labeled "Shoot Space" if/when you're selecting the speaker on the app.