This started happening when I loaded my phone with some of my MP3 library. Further, I've gone through all settings, of which there are none to prevent this, talked to T-Mobile, and Samsung, to no avail. Their final response was to perform a factory reset on the phone. Finally after hitting a wall I relented and did so. The first time I hooked up to my car after the reset it did it again. Is Samsung determined to make me hear music on their app I don't want, or is there something I missed?