Windows only: iTunes excels at making playlists whether you're dragging and dropping or using building a smart playlist. iExporter lets you enjoy your awesome choices on other devices besides your computer and iPod.
Presently iTunes is stingy when it comes to sharing the playlists you build. You can export the playlist and tunes to your iPod, you can listen right at your computer, or you can stream the playlist to devices around your house that support the iTunes library. If you want to put the incredible Herbie Hancock/Kurt Cobain fusion mix you just whipped together onto another device like your swanky new phone or a USB drive to take to work you're out of luck. iExporter is a simple application for taking the contents of your playlist and dumping the songs into the folder of your choice.
The application only exports MP3 files and unfortunately doesn't create an actual .m3u playlist file—a rather glaring oversight we'd love to see corrected in a future release of the tiny app. iExporter is open source, Windows only.