A:AnswerThere are several Alexa enabled soundbars available that will enhance your tv sound. I have a Polk Command that controls volume, bass and treble and a subwoofer for the uhd tv plus any music or audio Alexa can stream. Weather, news, trivia or other audio all sound clear and static free , and it doubles as an adequate audio system.
A:AnswerI know that if you enter the conference dialing sequence (including commas for pauses, pound signs, whatever...) on your smartphone, and give that calling string a name, you can dial by name and it will execute the proper sequence. I’m not sure if you can verbally tell it to dial secondary sequences dynamically...
A:AnswerNo. You would create a group and then play music on the entire group, "Alexa, play (songs/song/playlist) on group (I have one called everywhere)). Prior you would create a group in Alexa and then add the devices to that group. Then Alexa plays the same song on the Everywhere group.