your problem is obvious you bought something from apple! do you realise thats the same company that creates macs? here,next time, buy a cheaper, better alternative, that shuffles, among other things, and has a lcd screen, and better batt. life.
anyway, there is not any such thing. anything regarding volume is hardware related. meening, its your ipod that has the problem. try some of the ones that block exterior sound, be it the sound blocking earbuds, or the huge oldschool headphones
you could try eupod it boosts the voloume of europen ipods your can get it from ipodlounge.com if u cant find it let me know i'll send it to you
