I'm using OS X 10.10 and my iTunes (version 12.1.2.x) keeps opening. the only behavior pattern I could observe seemed really bizarre - It would open when I would click in my Firefox window. I retested many times, but I couldn't reproduce this after I removed my headphones.
I checked for anything suspicious in
/private/var/log/system.log. I didn't see any odd interactions between Spotify and iTunes (i.e. an event in one that led to an immediate event in the other when looking at timestamps). The only thing sort of suspicious were these logs (there were many of these entries) from iTunes when I wasn't using it at all:
/private/var/log/system.log:Apr 24 11:12:06 ITADMINs-MacBook-Pro-4.local iTunes: ### PlayQueue::StartPlayingNextInternal: played off the end of the queue /private/var/log/system.log:Apr 24 11:18:37 ITADMINs-MacBook-Pro-4.local iTunes: ### PlayQueue::StartPlayingNextInternal: played off the end of the queue
What could be happening?