i think it is 4 years ago or so that i bought a MZ-NH600D in the US. I live in europe , belgium and i managed to lose the CD containing sonicstage , so i downloaded sonicstage from the support site of sony. This was an old version i think sonicstage 2.0 or something. That worked for 4 years perfect until a few weeks ago. I tried to import an album i downloaded, and sonicstage wouldn't play the songs i imported. so i thought, reinstall it , and it wil work. So i went to the sony support page downloaden sonicstage 4.0 installed it , and let the program scan for files. But when i opened my library all songs were there, but almost none of them worked. sonicstage automatically skipped every song i clicked. It only played a handfull of songs. I don't understand it , i don't think my files are copyright protected, half of the files are from original cd"s So i tried importing the files manually , but then i got an error stating : sonicstage can't import files that aren't registered to sonicstage , error 00007180 can someone please help me ?? thanks