How many of you ride with an iPod?

I know someone who does this. She rationalizes it by using one earbud instead of both. I maintain it isn't safe and that you have to be much too actively engaged while cycling--even on a bike path--to have that distraction. (Of course, this person also texts while cycling. And driving. And hits the roof when you call her on it.)

I was on a ride once and a guy came up beside me who had music playing. He had something rigged up in his handlebar bag. That doesn't seem quite as dangerous to me, but you obviously can't walk away from it or it'll be stolen and you run the risk of damaging it if you go down.

Thoughts on music?