My cellphone used to be able to play mp3's until one day something weird happened. First off, It just froze. It wouldn't turn off and I eventually had to take the battery out. The next day after that happened, I was listening to music on a playlist when the music just stopped. I looked on the screen and it said "Not supported content". If I turn my phone on, it will be able to play one song before it breaks. I can try and play the song that it just played again, and then it says that it isn't supported content. I will then have to turn my phone off and the back on and then it works for one song only again. Any ideas on how to fix it???