LOL it was embarrasingly simple the little leather string that holds the beads had a loop made in it with a small jump ring and the loop was threaded through the chigaco screw on the leather piece. This is what was done on the pink brow band at least (I took mine apart) so I am assuming the red one was attached similar. Now that I know how to do it I am going to make all my riding buddies rhythm beads and matching browbands for christmas :)
Going to have to try and make one for my fat yellow pony now.
...oops, he heard me....
Ahem, he says he is a sharp buckskin horse and he refuses to wear girly stuff. Period.
(I'll sneak it onto his bridle when he's not looking....shhhhh.)