$6 flat bastard file
$100 mp3 player
My camera was being finiky, otherwise I'd take closer picts of the file work. Basically, I filed down the band on the headpwns until the clip on the shuffle was almost (but not quite) completely in the closed position. I made sure to make the filed section was only as wide as the shuffle with a sharp corner so the shuffle snapped in to place and didn't wiggle.
It's comfy and light and easy and plays in excess of 15 hours