ipod request: the exact opposite of volume limit

i listen to my music w/ shure headphones – essentially ear buds w/ built-in ear plugs.  that means that it blocks out pretty much all noise that isn’t coming from my ipod.  that also means that i end up turning the volume down much lower than where people would normally keep their volume levels set at.  waaaaay lower.  like the absolute lowest possible volume setting before the ipod goes to mute.  and that’s not low enough. while it’s great that apple has incorporated a volume limit so that people can stop themselves from blasting out their ear drums, it would be a nice feature if you could lower the ‘low’ volume threshold on the ipod/iphone (or any device for that matter) so that you can listen to your music as low as you want to go..