was listening to a song when the volume slider automatically went down, parang mute. I tried to adjust the volume syempre, pero bumabalik sya into "minimum volume" aka no sound, mute. And kahit anong adjust ko to maximum volume, it just goes back to mute state. What I did was to Quit itunes pero same problem pa din when I opened it. Restarted it, ok naman na ulit. I'm obverving it still, just in case somethings really wrong. Its so weird. Has anyone experienced this?