MacBook Pro overheating when plugging earphones

Hi. My MacBook Pro is overheating when I plug my iPhone earphone.

Before this, I had some issues with iTunes ans earphones. When I plugged it, iTunes was opening by itself all the time, while my phones where connected.

I found lots of discussions about iTunes and its automatic execution, and I found a solution telling me to rename iTunes.app to anything.app and it solved.

But now whenever I plug my phones, may mac starts overheating. In Activity Monitor, the "launchd" process goes up to 80%~90% of CPU (this is what is causing the overheat).

Does anyone know what is happening? (Yosemite 10.10.5, iTunes updated to App Store)