I have an IMac runniing Yosemite 10.10.2. When I have a browser open Spotify streaming skips or stops playing. A mouse click starts play again, but only temporarily. If a browser or no other apps are open the play works fine.
The desktop app crashed my Macbook pro, so I uninstalled it. I didn't do a re-install and used the web browser version of Spotify for a couple weeks. The audio is amazing and NO DROPS! But the online version lags and isn't as user friendly, so I went back to the desktop app version.
SO NOW, Spotify drops out constantly.
It is the ONLY ONLY app that this happens with. I've done the trouble shooting with Airfoil tech, my router - iTunes, and other streaming services. Spotify is the only one that drops out.