I've been a big user of Windows Media Center since around 2003. As the music section of Media Center is linked to the Media Player library, I have always used wmp to organise my files. In past versions of media player, unless an album was "found", wmp would organise the file unpredictably. I have a very large music library which I've spent years updating. I did a clean install of windows 7 to a seperate hard disk and found I couldn't just dump in the old database file as with Vista (presumably wmp12 has improved the database schema since 11). How have other media player users managed to work around this issue? If I had performed an upgrade from my vista installation, would I have kept my library? Great site by the way - incredibly useful!