I have been trying for a while now to figure out how could combine an audio patch cable to a lego motor wire. When i finally got it, it eventually turned into this. if you happen to have a newer nano, im sure u can adapt this to suit your needs. first instructable ever, so please dont dis it. it may be pretty stupid and impractical, but u dont have to look at it.
Step 1: Wat U Need
these are all the lego pieces I used for the base, but as long as its this size, you can use any pieces you want
Step 2: The Audio Jack
now were gonna' modify a standard male to male audio jack- i spliced some wirs from half of one to the lego wire. oh, yeah, you need to make another plug with the other halves of the two wires. (lego and audio)
Step 3: Contiuing the Base
ok, now on with the building....
Step 4: The Ipod-holder Thingy
ok, almost done... use the remaining pieces to make the holder.
Step 5: Use It
plug your ipod in the dock. the use the scond cable, and plug the lego end on the electric brick in the dock. now, plug the audio cable in, and....... TA DAH!!!! usless, but cool!