A clue should have been that the host site I linked to for the audio file was the humor.about.com site. The bigger clue was the atrocious scatting at the end of the audio file (which I never heard because I never made it to the end of the song.)
The biggest clue of them all was audiolog's comment on my post... that it's a hoax! Thanks audiolog!
Oops, this was a very bad case of 'Consider the source.'
I guess this is what happens when you're desperate for something to blog about. ;-)