Here is the headphones that I've modified to be awesome.
For this build I was using:
Step 1: Drilling a hole
At HackPrinceton 2014, my teammate and I built a robust, hand movement-controlled music system. We used the Leap Motion and its developer API to capture hand and finger data, and we utilized the Python language and the Pyo library for Python to process audio files in a variety of ways with the data received from the Leap Motion sensors. For example, each finger represented a different equalizer; by bending each of his or her fingers downwards and upwards, the user could adjust the values of these filters. We also used intuitive gestures to modify audio volume and speed / pitch. Falangafone was ultimately packaged as a Flask web application that allows users to easily select songs, profiles, and even visualize data from the equalizer!
We took it a step further, however, and used an Electric Imp to interface with Falangafone. Using a toggle switch, we created an play / stop button for the application, and also programmed several LEDs to flash based on the music.
This project was a great opportunity to learn about python, Flask, pyo, and electric imp. Huge thanks to the HackPrinceton team for providing participants with such great facilities to make projects such as this one.