I don't own an iPod, but if I did, I would not use it while riding my bike. It's too important to be able to hear what's going on around you. Sometimes I don't hear a car as it is until it's right behind me. I've also been suprised by dogs, small children, other riders, etc.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher