We get a lot of questions here at WPCentral regarding transitioning your data or media from one service to another. One common question is about iTunes and compatibility. While you can use the Windows Phone 7 Connextor tool to help in that area, one alternative is the open source iTunes Export program by Eric Daugherty.
The app is either command line or has a GUI version (requires Adobe Air) and is pretty straightforward: launch, it finds your playlists, allows you to convert them to different formats to export: standard .m3u, .wpl (Windows Media), .zpl (Zune), or .mpl (Centrafuse) playlists. Seems easy enough and should help those of you previously hooked on iTunes to transition over.
Grab the program here.