Bizarre blog factoid

Almost a year ago, I posted a blog entry linking to a short MP3 recorded by Alec when he was in hospital in Lille, following his motorcycle accident. Ever since then, this MP3 has represented between 20 and 45% of the data served from geoffarnold.com. Last month, for example, it was retrieved 558 times for a total of 944MB. During the same time, Google Analytics reports that I had 2,007 visitors who visited 2,827 times and generated 4,239 pageviews – but none of these retrieved the page that linked to the MP3.
So who’s fetching Alec’s podcasts, I wonder? I can’t be bothered to dive into the HTTP logs, but I am curious.