everytime i try and play media in Media player, musicmatch, limewire or anything that plays a kind of media the sound keep turning off. i open the volume control and the wave bar is all the way down. i can only hear sound when i open the volume control, turn it up all the way then open the media. when it goes to the next song and the volume control is open i will not be abel to hear any sound even though the volume is up all the way. i click on the bar then i can hear it.