Proble with 'File' plugin


I am having a problem with the file uploaded system on our network. Although the files get uploaded, the download doesn't work. Whenever someone clicks to download the files, 0kb is downloaded. However, the images are uploaded the downloaded properly. But, not working on other formats. I have tried with .wma.

Check it here. I uploaded a song and no one can download it now

I had to give a 4shared link to the post.