iTunes on MP3 Player

iTunes for Windows is only compatible with the iPod/iPhone range and the iTunes enabled phones from Motorola. You need to check out the manual for your player to see what method it uses to import songs. Most will have their own management software and many just operate as simple USB devices and you can drag tracks from the iTunes Music folder rather than through the iTunes interface. Also remember that many players will not work with AAC (MP4) format at present so if you imported anything from CD into iTunes using the AAC encoder then they will need to be converted to MP3: How to convert a song to a different format

Alternatively you may be able to get the player working with the aid of a third party helper program. Have a look at this one and see what you think:
iTunes Agent -Windows

Also standard iTunes copy protected songs won't play on other players, only the iTunes Plus purchases can be converted and used on other devices. The only thing you can do with standard songs apart from playing them in iTunes or on an iPod/iPhone is burn them to Audio CD. You can use that CD just like any regular one.

You're welcome, I hope you get things sorted out. Your error message may have something to do with the audio format I mentioned above. If the player only plays MP3s make sure that the setting you have as your import preference before you import any CDs: How To Choose Import Settings

Take care.

We have Nextar mp3 players also. You might have the same problem we have although we're working with a Mac. When you drag either from itunes or from the folder directly two files are copied for each song, one of the wont play and show a "format error" this has to be deleted then the other one will play. Unfortunately this has to be done for each song. I can on here looking for a way to see this "hidden file" which begins with _xyz for each xyz song. Our kids delete it on the MP# player and all is fine.