First time using Nike+ with an iPhone 4 instead of a Nano. 1. Is there any way to use the headphones controls to get spoken feedback? I can pause the workout to get time and distance but I don't know how to do it and keep the workout going from the headphones. 2. Is there any way to use the headphones controls to activate the Powersong? User guide says to unlock the phone and activate Powersong on the screen but on the Nano it is much easier by holding down center select button. Hoping there is a headphone activation trick. Any other iPhone 4 tips and tricks? Any recommendations on Sportbands? Thanks for any feedback.