Kmz downloads not visible

Hi!
On my webpage, there are some kmz files available for download (or displayed via GE)
I really would like to know which kmz files are downloaded but piwik doesn’t display it (pdf and zip are working, though).

Anyone knows how to solve this issue?

Thank in advance

It is possible to track new file extensions as download, see http://piwik.org/docs/javascript-tracking/#toc-changing-the-list-of-file-extensions-to-track-as-downloads