I share an iTunes account with 4 others in my family and we have different music taste. I have my own playlists but my iPhone (3GS) keeps playing music that is NOT on any of my playlists. I have checked them all. How do I delete them off my phone? I have no unwanted artists or albums selected under the music tab when syncing, I have checked all of my playlists, I do not have 'automatically fill free space with songs' ticked either. What do I do?