Default Automatic playback

I have a micromax canvas hd running official 4.2 rooted. I have installed all the 3 pure mods.
When I attach any external audio device through the 3.5 mm jack any songs starts playing without me even using music app. Even if i am playing games or watching a movie the music starts on its own. What should i do??

Sent from my Micromax A116 using xda app-developers app