Having found the time to move some of my music from the NSLU2 and into my Mac, I finally had enough music to give Tangerine a decent run-through (since it doesn't support DAAP and I only had a couple of recently digitized albums on my iMac, it was a bit pointless to test it until tonight).
I hereby pronounce it the best iTunes add-on since... hum... sliced bread?
Let's see how long it takes for me to get a Nike+iPod kit (and regular free time to exercise properly).