The iPhone 3GS comes with the same kind of headphones the new shuffle uses, which not only has a mic but playback controls as well. Unfortunately it’s still iBuds. I fixed that.

The concept is simple. Disassamble the iBuds, disassamble a pair of Sennheiser CX300, reassemble to the setup you see below. It’s really that simple. Nothing fancy, if you can get the new IEMs/buds open in one piece that’s 90% of the battle. Does it work? Of course, and it sounds very good. Remote control CX300 FTW.

UPDATE: Video tutorials from when I made my second and third pair of these: