What is the inline headset button support like on the Samsung Galaxy S2? I have iPhone-style headphones (Klipsch S4i) with 3 buttons, the main button plus a volume up and volume down button. I want to if and how these can be used. So far I can't get the volume up/volume down buttons to work at all. I assume that it's a physical difference in the jack and they will never work. The main button works in that it allows me to pause/play music tracks using the default "Music" app (I assume this is a Samsung app). However, I don't see any way to skip to the next track or the previous track. Normally on an iPhone if you double-tap the button it skips to the next track, or triple-tap the button it skips to the previous track. Since the button itself physically works, then I assume support for next track/previous track functionality depends on the app implementing it. Does anyone know a way to get next track/previous track button combos to work? Is there a third party app I can use?