How to know which files iTunes could not import? I'm trying to import a large iTunes library from an XML file, but at the end I get a message:


  Some songs of "example.xml" file were not imported because they were not found


However, I know that all the songs in the XML really exist (since I've generated it a few minutes before), so how can I know which songs iTunes didn't import? Is there maybe a log somewhere I could look at?
I have found that importing songs with ampersands and commas in their title or album name can cause problems.  I haven't found a workaround, but exporting the library to a text file and then searching the proper columns might help identify the missing files.