ZuneMods.net posted a new mod for the Zune FM transmitter. Adding an external antenna can increase its range and create a small radio station for the cars next to you when stuck in traffic!.
Information & Setup: Get all the supplies you will need ready and laid out. You will need:
Step 1: First you want to pry off the top piece of the FM transmitter. To do this, carefully take your pocket knife, slide it into the groove where the top piece meets the body of the FM transmitter case, then pull up on the handle of the knife to pry the top upwards away from the body of the FM transmitter case. If done correctly, there will be no visible interruption to the case, and it will still look stock. Try not to break any of the tabs on the top piece, like I did.
Step 2: After the top cover is off, you want to make sure you don&t touch or scratch the LCD, because once back together, the LCD will be under a clear protective layer, and any fingerprints or damage will be clearly visible and unable to be cleaned. Carefully pull straight up on the circuit board to pull the top half of the CB&s away from the bottom. Set the top CB aside for later.