Sound not working For some reason my phone stopped playing ringtones from incoming calls, txt messages, and simple system sounds from apps and stuff. But the speaker works because it will play music, then two seconds later I'll get a call and it just vibrates. I double checked that I had all of my sounds set properly, it should vibe and ring, and I double checked that the volume for both the ringer and system were all the way up. What is the problem? Oh, and the little preview button that you get when setting the sounds...that doesn't play anything either. When I had it set to vibe and ring, if you pushed the play button it just vibrated, when I changed it to ring only, it does nothing.