HELP!! My files from my office come across as .mp3 files to my home computer. The files sound like the docs are talking through a senthesizer (sp?) it is too difficult to listen for very long. I've turned the subwoofer off and unplugged everthing from it. I have plugged the headphones in to the speakers directly and into the computer directly..Still can't hear well....they sound like they dictated in a tin box. Any ideas/suggestions?