With a soldering iron and a cheapo FM transmitter — the kind used to
play an iPod through a car radio — you can transform your humble Honda
into a Radio Free Civic that can broadcast your tunes up to ... 100
feet.

     Step 1. Pry open the transmitter’s case with a putty knife and
remove the internal antenna
                (often labeled ant).
     Step 2. In its place, solder a telescoping antenna or a piece of
copper wire — no more than
                35 inches long for broadcasting within the standard FM
transmission spectrum.
     Step 3. The transmitter may have a resistor, typically marked
with an r, to limit the power of
                 the signal. Replace it with copper wire to boost the
transmission.
     Step 4. Slap a bumper sticker on your ride advertising your
station’s frequency.

You’ll soon build a grateful audience of fellow commuters suffering
through that traffic jam.

I would like to improve my little FM transmitter to broadcast my
playlist music from my Zune.  Got extra advice?