Jig's up.
After a run and breakfast, I booted varmint and noticed that there were 83769 tracks left to be downloaded before the iTunes Music Service had delivered 100 million 200 thousand tracks. My iTunes 100K Countdown widget continues to work, but for no reason I can see. (UPDATE: As of 3:10 pm EST, the iTunes 100K Countdown Widget no longer works.) :(
Kevin Britten of Hays, Kansas [who] downloaded Somersault (Dangermouse remix) by Zero7, is the lucky devil who downloaded song 100 million. Congrats to him, though he probably wont even give me any credit for using my widget.
Im not bitter.