Hi,
Let's try the below steps:
a. Click on start button, Click on the userprofile name.
b. Open My Music folder.
c. Open iTunes folder.
d. Make a copy of "iTunes Music Library.xml" on the desktop.
e. Validate the XML file. The easiest way to do this is to open the "iTunes Music Library.xml" inInternet explorer(right-click on that file>Open with> Choose default program> Internet Explorer). At this point, you will get an error message saying that there was an XML Parsing Error.
f. Find the song that is causing the problem. If you can't tell which song it is, you may have to open up the file in a text editor (right-click on that file>Open with> Choose default program> notepad), and navigate to the line number specified.
g. Go into iTunes, find the song, right click it, and Selet "Delete".
h. Once you've done that, re-load the file into Internet Explorer and correct all the songs until there are no more errors.
i. When Internet Explorer parses the file correctly, quit iTunes.
j. Delete "iTunes Library Extras.itdb" and "iTunes Library Genius.itdb" files in iTunes folder (Follow the step from a to c to open iTunes folder)
k. Restart iTunes, enable Genius (To enable Genius check for the setting in iTunes).
You may also post your issue on apple discussion group.
http://discussions.apple.com/category.jspa?categoryID=149
Thanks and Regards
Umesh P - Microsoft Support. Visit our Microsoft Answers Feedback Forum and let us know what you think.
[If this post helps to resolve your issue, please click the "Mark as Answer" or "Helpful" button at the top of this message. By marking a post as Answered, or Helpful you help others find the answer faster.]