Swedish headphone manufacturers Urbanears wants to make being a DJ on the go possible with Slussen - an audio jack splitter and app combo. The setup is relatively simple. Which includes a narrow profile splitter for simultaneously connecting headphones and a sound system to your iPhone, and an app for mixing those beats.

The splitter costs RM47 (though the red one is RM61 for some reason), comes in four colors and can hang on a keychain. Check it out over here: [Urbanears via Werd]