I got fed up with this issue, did a factory reset and even though all the apps that I had previously were auto added after the restart, the Media process no longer pops up on the battery usage screen. I hope it stays that way, because now my battery life is back to normal--with 18 minutes off battery, I'm still at 97% and that's with me having the screen on. If Media was running, I'd have lost the 3% in the first 4 minutes or so.