ud obviously need 2 take at least one ear phone out of ur ear, and i guess if the music wasnt too loud, it could work...
Having earphones in i guess would seem un-threatening to women, and then by actively taking out a headphone in order to talk to her, then it shows that you are engaging yourself with her.
You could even use it as a sort of neg or false walkaway if you said like "i think i was having more fun listening to my music" and then put the earphone back in as you pretend to walk away...
nice idea dude, think i might give it a shot
live2flirt