I've been commenting that there needs to be a freeway to use Spotify on Fitbit, after doing some research, I've found out that it is just basically a remote, well Fitbitalready has that built-in and you can do it for free extremely easily. I'm on chrome OS but you can do the same thing on a phone.
- go to settings on Fitbit
- go to Bluetooth
- restore music controlls>tap until it says pair
- add audio device
- go to your phone Bluetooth settings
- tap [Watch Name] (classic)
- then go to the clock screen on Fitbit
- swipe down from top to notifications panel
- swipe down again to see the quick settings, wallet, and music controls
- start playing any form of media on your phone and you can control it from your watch!
- you're done! no need for Spotify/pandora premium