I'm still not quite sure how it found it's way onto my computer, but I'm glad it did. Whilst I was doing lots of odd jobs around the house and garden, I was listening to new music. The music gave way to a lecture, and I was quickly hooked.
It was Benjamin Zander describing why he thinks Mahler's Third Symphony is one of the most amazing pieces of music ever composed. With plenty of examples, presumably from one of his recordings, we got to hear the full range of Nature that he depicted, and man's influence too. I am a fan of some of Mahler's symphonies anyway, but it would probably be compelling to anyone who enjoys music. So not only was I feeling satisfied about the jobs done, but entertained, educated, and inspired to discover and enjoy a new Mahlerian masterpiece.