Basic soldering skills recommended, minimal list of parts.
By using a ziplock bag, you make your ipod or MP3 player splashproof , so you can listen to it while in the shower.
Step 1: Headphone cables
Use a cutter, but be very careful not to slice the cable.
Most of us have cheap earphones that were given to us by an airline.
I use these as the cable is relatively thick and easy to strip.
You only need the plug and 50 cm of wire.
Alternatively you can buy a plug and wire.