Windows only: Use the same kind of quick-thinking, fast-organising tags you use to organise your web life with TaggedFrog, a free Windows utility that sorts and finds any file you can throw at it. Windows Vista (and the Windows 7 beta) already have native tagging systems, and OS X has long offered search-able metadata as a simple filing system. Vista's tagging is limited to certain file types, though, and it's in need of a central tag station, much like the one TaggedFrog provides. TaggedFrog tags any file you have with any words you want, so you can selectively tag files to separate projects, keep a track of any MP3s with curse words in them, or whatever quick-search needs you have. As you search, a "cloud" view shows the most-accessed, or most-tagged, keywords, and you can narrow your search by file extension for heavily-used tags. There's a portable, no-install version available at the program page, so even if you only want to try out TaggedFrog for a quick MP3 organisational mission, you're good to go. TaggedFrog is a free download for Windows systems, requires the .NET 2.0 framework for both the installed and portable versions.