Hello,
my name is Fabio and I thank you for this forum.
Hope this post is in the right place:

Can you boost the voice volume of Nike+ and Voice Control?

I bought the nike sensor and I often use it with my iPhone 3Gs when I go jogging. It's all really amazing but the voice is very low and if I hear my playlist I can't hear my training stats from the iPhone. The same is for the Voice Control's Volume.
Can it be a problem of my headphones (from the box of the iPhone 3Gs that I bought in June last year)? Or maybe there is a file that I can edit to increase the volume of that app?
Thank you very much and good work.
Best, Fabio.

P.S: Sorry for my english.