Well i went to sleep playing music on my Logitech Z-560's. When i woke up this morning all i can get from my speakers is a little whisper of sound even with the volume up. Whenever i plug the speakers into my stereo i get sound just fine and when i plug headhopnes into the speakersystem i get sound just fine. All the volume settings are up and my connections are good....any suggestions? P.S. I've also tried resetting every swtich i can including the power strip.