I was just wondering how well the headphones work with the blackjack, especially since it uses a different connector than most other devices. Does it stay connected pretty well? I currently use Cingular 2125 and for whatever reason most of the headphones or 2.5 to 3.5 adaptors I use dont stay in well. I listen to it when jogging, so there is some movement. But just wondering if the blackjack worked any better. Thanks for any feedback.