ok..i contacted to Ketron Turkey and they will send to me a new HD (fully preloaded).. but it will come from Italy and it takes over 1 week..now i can play midi files,mp3 and waves..and also (some!!)midi sytles..but i ques there are some bad sectors on HD couse i can see some style names (from bonus styles)on the screen but when i push to button nothing happens...but some styles work corectly...i have to wait