Originally Posted by Quattro Pete
Chromecast Audio is another option. You can then use your phone or tablet to cast pretty much any streaming service to Chromecast and have it play on your home theater receiver.
Google recently discontinued Chromecast Audio, but you might still find it on the shelves of Walmarts or Targets, or online somewhere. It's like $15.
+1
One question though, you are going to run the laptop just to play Spotify (unless of course, it is running 24/7)? You can not play from your phone, any old smartphone should work?
Audio Chromecast was a great option. I recommend you get one before it is cleaned out.
If you can run it from your phone, just get RCA to 3.5mm male cable and directly connect the phone.
Unless bluetooth receiver is in a straight line, I doubt it will work. My apt is tiny and it doesn't work in the straight line more than 6ft away.