So I am using a Logitech G710+ keyboard with my Mac (running 10.9) , and the media keys (Play/Pause, Stop, Next and Previous) work perfectly fine with iTunes, even in background.
Now, when I use Spotify, I usually quit iTunes (to stop conflicts), but only the Play/Pause key seems to work.
It does work in the background, which is good, but crucially the Next / Previous keys don't work at all.
Solved! Go to Solution.
This fix from WASD keyboards support does the trick on my Cooler Master CM Storm Quickfire XT: http://support.wasdkeyboards.com/customer/portal/articles/1925899-fixing-spotify-media-keys-issue-in...
Edit: my keyboard is the nordic ISO variant if that makes a difference.