Why spotify its open on my device if im listenning in my computer or table?

[claudodoar]

Hi, i was wondering why soptify its open in my mobile when i star to play it in another devices (Pc or Ipad) It is opening on my mobile and appear a message saying "SPOTIFY is using in Claudio PC or SPOTIFY is using in Claudio IPAD continue?.. I answer yes, but in each songs its open it once and once and once on my mobile specially when im near by my PC or my Ipad or using the same WiFi. I just setting a non multiple play but its still its open in my mobile.. Someone can help me?... its is very annoying and its consumes data and battery from my mobile
Tnks!