I haven't needed iTunes in the month I've had Mavericks. Last night I\ndouble-clicked a wav file and iTunes came up asking me to sign its long\nuser agreement. I didn't have time. I quit iTunes and used Quicktime,\nas usual.\n\nToday I shut down. After I restarted, iTunes repeatedly launched\nitself, demanding that I sign the agreement. I finally relented,\nsigned, and quit. Since then, it has repeatedly launched itself,\ntelling me to listen to iTunes Radio.\n\nWhy is it launching itself? How do I stop it?