To get started, I think I'm going to get the Sonos Soundbar and a connect. The connect will work with that receiver you're giving away, yes?
Yes.
And then I can just take my currently existing turntable and buy a component CD player and hook them up to the receiver and would be able to play the music in the TV room too, right?
No. You should sell all of your CD's, but yes, your turntable will hook up to it. And if you ignored the first part of that sentence, then yes, a component CD player will also hook up to it.
Can I have the amp both hooked up to the Connect and my current speakers at the same time?
This one is interesting. Yes they can both be hooked up, but can they play simultaneously?
I'll have to check the back of the tuner. What you would like is for the wired speakers in the Parlor to play at the same time as the wireless speakers in the TV room? If that's the case, then the tuner will need a dedicated out (RCA Jacks) that we will plug in to the Connect. Dedicated outs were common during tapedeck days for recording, but I'm not sure on this particular tuner. I'll have to look at the back of the unit when I return home on Sunday, but I'm sure I can make something work.
Then, if I want a few months down the road, I can get actual Sonos speakers for each room? I'm still a little confused on which of the 1, 3, 5 models to get, and how many I need for each room. I saw somewhere that 2 3-series and a soundbar replicates 5.1 surround sound?
Yes, you can mix and match the Sonos speakers as you see fit. I have gone with the soundbar and 2 Play:1's for my surround sound in my TV Room and will be adding a separate Play:3 or Play:5 for the bedroom, which can be moved to the kitchen or the backyard as we see fit.
I think 2 Play:3's with the soundbar would be over kill for 5.1, but can you really ever have too much sound?