1st gen iPod Shuffle?

There was this one inctructable for adding an iPod shuffle (gen 1) onto headphones, but what if we can rig it so we use one over ear headphone + ipod shuffle mounted, and take out all the shuffle stuff and add bluetooth headset components! that would be ccrazy!

You totally lost me
I think what he's saying is take a bluetooth headset, gut it so you have the case, and cram the shuffle inside of it (with one earbud) so that it's like a bluetooth headset (those things that people wear that covers one ear and it looks like they're talking to themselves), but it plays music.