Introduction
As some people asked me about a GUI for the Itunes Converter an updated Version featuring a small Swing Wizard is available now. Also the conversion should work a lot better too. However only MP3 Files are supported. You are welcome to send me a better XSLT file 
As always a Java Runtime Environment is needed. As I have no Mac available I would be grateful if some Mac Users could send some Feedback.
Download
There is a Windows Installer available now. Just unzip an start the setup.exe.
Windows Installer
Zipped JAR File