thx for the quicksnap input {the more feedback now, the better, cause once i actually code this up, it will be hard to get your two cents in}

i dont know how to detect 'jackstick is plugged in', and, in my opinion, its a low-priority thing compared with totally disabling the volume buttons {which would be the best solution, again just in my opinion}.

im pretty ticked off that the volume keys work in the lockscreen to begin with; i think its a dirty-urty trick that nokia preemptively played on me particularly, in the future-past.

my recommendations are to either/both:
1) remove the music actions
2) change the volume from the status bar after unlocking it

i mean, i generally adjust the volume once and use an equalizer to make sure my ear drums dont get blasted. i then routinely skip through songs, and play/pause, waaay more often than id ever want to adjust the volume. this is me personally, tho, and my music player doesnt have volume-key-controls. {so for me, my buttons just skip my music without messing with the volume}