Hello everyone,I have KEF LS50 speakers connected to Cambridge Azur 651A amplifier. I am listening music via my Macbook and through a USB cable connected to the amplifier. I want to use my Macbook at 7-8 meters away from the amplifier without loosing any sound quality so I need a solution for that problem. I read that after 3-5 meters usb cable length the sound quality drops. There are some people suggesting to use USB hubs but I am not sure that is going to work or not?Any solutions, suggestions and comments?Volkan