I've lost track of what you want, so I went back to post #1.
If portability is NOT a factor, and you use Google Play Music, possibly your easiest solution would be a Chromecast Audio plugged into a little Dayton Audio amplifier from Parts Express (or a low cost stereo amplifier; A4L has a Yamaha refurb for $100) and a couple of small bookshelf speakers or an active sub with speakers daisy chained form it. Very economical, potentially awesome sound (e.g. Dayton Audio amp, HSU HB-1 speakers with a HSU VTF-1 sub.
Or a Chromecast regular plugged into a slimline amp with HDMI in. Might be overkill.
I'm not sure how to get regular "pc audio" off your laptop to the speakers, unless everything you want to hear is in the Chrome browser. I haven't used a Chrome browser with the Chromecast audio, though I have a friend's that I tested for him. Guess I could try that with my Chromebook.... :}
 Do you have the all access subscription like I do? Doesn't it rock?
Could you clarify with a bulleted list of the audio you want to go into the speakers? e.g.
o Google Play music player on Chrome browser
o Google Play Music on my phone
o Youtube audio from Chrome Browser, phone
Originally Posted by PTMD
what about a bluetooth sound bar?
Most of the soundbars I test out at Costco offer Bluetooth, some offer more wireless connectivity. Of course, you have the rigidity of a fixed position soundbar. Compact, yes; but you can't widen the sound stage.
Addendum: BTW, I heard last year there are some soundbars and other speakers that had Chromecast Audio built-in, for streaming from devices. Presume at the very least that this includes Google Play Music.