Okay this is my first instructable, I decided to make this because my store-bought AUX cord wasn't long enough to run from my entertainment center to my laptop. It is cheap, fairly easy, simple and only takes about 20 minutes (or less) to make.
Step 1: Parts You Need
All you need is,
A 2.5 mm head-phone jack with a few feet of cord, an old pair of ear phones will do the trick.
A circuit board, I used one that I had de-soldered and sanded the printed circuit off of.
A 2.5 mm jack receiver, I de-soldered this one from an old cd player.
And some form of enclosure, an altoids tin would be ideal but i didn't have one on hand, so i used a piece that i pulled out of a broken VCR.
Step 2: Tools Required
Dremel (optional, depending on enclosure used)
Step 3: Place Parts
Place 2.5 mm jack receiver on circuit board (drill holes for it if necessary, mine already had holes)
Step 4: Solder the Cord
Strip the covering off of cord
Separate all three wire
Burn the tips of each
Solder it to back of circuit (red should be right, blue left, and copper ground)
Step 5: Tape It Up
Tape it up with electrical tape to keep it from shorting out when placed in enclosure.
Step 6: Put in Enclosure
Place in enclosure, secure it with hot glue or super glue if necessary.
Step 7: Final Product
And enjoy your music.