I have to say, I haven’t tested this on anything other than an iPhone 3G S, but hey I couldn’t find anything out there for this, so here you go!

This is a list of key presses on (what seems like a very simple implementation of) the headphone control for the iPod. This list will show you how you can play, pause, skip forward, skip backward and even fast-forward / rewind your songs on your iPhone / iPod with just the headphone controls.

• To play a song, press the middle of the control once.
• To stop a song, press the middle of the control once (when a song is playing)
• To increase the volume, press the top of the button (with the plus sign)
• To decrease the volume, press the bottom of the button (with the minus sign)
• To skip forward a track, double click the middle button.
• To skip back a track, triple click the middle button
• To fast forward a track, double click and hold down the middle button
• To rewind a track, triple click and hold down the middle button

That is all!