Finally snapped with iTunes after it failed to recognise my music library and lost my playlists for the third time in three weeks. I'm a previous user of Media Center 16 on an previous PC. I downloaded the free version of version of MC18 tonight to see if I still liked it, which I did. I uninstalled the free download, and contacted JRiver for my registration code for MC16. I've input this on the restore page of the website, but all that happens is that I get a download of a 2kb file called MediaCenter16-149795.mjr. Windows can't recognise this, and nothing else seems to happen. I don't need the improved features of MC18, and I would be perfectly happy if I can somehow get MC16 onto the new PC. Equally if this can't be done, I would be very happy to purchase MC18, but I'm concerned that if I do this I'm going to run into problems because I'm already registered with my current email address as an MC16 user! Help would be greatly appreciated.