I like to wear one ear in. I have an iPod but I just got this new toy and love it for my daily commute ride. http://www.walmart.com/catalog/produ...uct_id=3756869 it is so tiny and light!

I agree also tune out the music in high traffic areas, The music helps me concentrate on my pace.

What really gets me the most are the people cycling along while speaking on their cell phone (no ear bug etc... ) I usually have mine on me but have never answered it while riding...