I use the armband to keep ipod up off of the greasy workbench in the garage - i just wrap it around a beam or pipe, and pipe it through a boombox with a line-in jack.
I also wrap it around a tripod supporting a self-powered loudspeaker called EON, for barbecues.
I highly recommend the Marware SportSuit Convertible, and the leather belt clip.
The bike handlebar mount is a joke. I don't jog.