A few days ago I was asked to configure AWStats to count downloads of .exe files on an website. I know that it's blindingly obvious that AWStats isn't the right tool for this job, but sometimes you have to pick battles with your clients. To save both my time and sanity I did what I was asked to do.
Interestingly, adding file download tracking functionality to AWStats proved to be very easy. In my case, the website was hosted on a cPanel server where AWStats was already installed, so I won't cover the whole installation procedure.