Note: this only started 2 minor upgrades ago. Prior to that, this never happened. I'm on Kitkat 4.4.4. What happens is that 2-3 days after a restart, all of a sudden no sound plays. For example, my alarm doesn't sound off in the morning and wake me up. No notification sounds. When I notice this, I'll go try to manually play a sound (using my file explorer). I get an error message "Error: unable to play the selected track" or something similar to that. This is driving me insane. I can't go on not trusting the phone to wake me up. And it's not the clock app. I installed another clock app and it does the same thing. Again, after 2 or 3 days I can't even play sounds manually. I have read that somehow the media index gets f'd up. A reboot reindexes it. Great, but no one should have to reboot a phone every 2 or 3 days. Recall that this never happened until the update just prior to the one I did last week (I was hoping the most recent one would fix this, but it doesn't). There was/is a "reindexing" app on Googleplay that's supposed to do the trick but it won't work on Kitkat. Help!