I need some tech help please. I have checked the settings on my phone the volume is up for everything (i.e. ringer, notifications, media) The ringer works. The sounds work. But when I try to open a downloaded application from the market, it wont play the sound. One of the examples of this: I downloaded a silly piano application, and it wont play sound, but it will vibrate. That is one of many apps without sound. What do I do? Help please!