Hi all. I have just plugged my sony walkman in after a long time with it not being used and non of my usb sockets will recognise it so i cannot transfer any thing onto it . I have looked every where for a sony content transfer program and only found one on the sony support site but it keeps telling me i have no MTP usb port. My computer is a acer aspire AX3400 which is the same one i used in the past and all was fine. The walkman is a NWZ-E445 and it has the content transfer program on it and it used to come up when ever i plugged it in. Any help would be welcome.