Galaxy S5, music automatically goes to speaker when on home screen.

[Acheros]

I got an S5 on friday, and I haven't really had any actual issues with it or android(being used OSx). However, as of this morning every time I listen to music with my headphones and go to the home screen, the music starts coming out of the phone speaker and not the head phones. Any app running, it's fine. Any other PAGE and it's fine. But whenever I'm on the home screen, my music blasts through the speaker...Which is kind of a problem when I take public transit everywhere.