Hi yvesblackstar,
Welcome to Microsoft answers forums!
a. Do you get any error messages?
b. Are there any other specific details that you can provide that will help us to understand and resolve your issue?
You need to convert the windows media player files to a format that I-pod can understand.
You may want to know.
Convert music, videos, and pictures from one format to another
http://windows.microsoft.com/en-US/windows-vista/Convert-music-videos-and-pictures-from-one-format-to-another
Burn a CD or DVD in Windows Media Player
http://windows.microsoft.com/en-US/windows-vista/Burn-a-CD-or-DVD-in-Windows-Media-Player
For more information, please check the apple support link
http://www.apple.com/support/
Thanks and Regards:
Ajay K
Microsoft Answers Support Engineer
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