Hello to all and hopefully someone can help me with this issue. I have a Yamaha DGX 630 and when i insert and format a USB stick in the keyboard my PC (running Windows XP) will not then recognise the stick and asks me to format it on the PC. If i do this then the keyboard doesn't recognise the USB stick. All i want to do is transfer some midi files onto my keyboard and the USB stick would have been the easiest option....Help!!