Is there a mains charger for the zen stone other than charging it by an usb port on a computer. or could there be a charger with a usb like port for charging it, I wonder could a powered hub do the job. Cheers Robin. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Of course, we are all worms--but I like to think, at least, that I am a glowworm. Sir Winston Leonard Spencer Churchill