I got a Cycle Sound enclosure a while back and started working on it. I quickly came to the conclusion I did not want to put a DIN style radio in it. After looking at reviews of Marine waterproof DIN style radios on Amazon.com and the costs I tossed that idea. All I wanted was an FM Radio. My Satellite Radio has an FM Modulator. I also have a media player with an MP3 player. I ordered an FM Radio Module that features Digital signal processing, digital squelch, and PLL digital tuning that never drifts off frequency. It's powered by a simple USB port and came with a 3.5mm phone jack that would plug into my small audio amplifier. It's design would also simplify making it waterproof so I would not need a door on it. I made a face plate made from Lexan and black plastic sheet material. I also like the two dual function knobs on it that are easy to use with gloves. I have my satellite radio and GPS modulators both set to 88.1 Mhz. Lucky for me when the GPS gives turn directions it blanks out the Satellite radio so directions are loud and clear when I use the GPS unit. I keep the CB Radio separate. When I use it that's all I use and turn everything off except the GPS. Strange things happen to my Satellite radio and the FM radio when I transmit a signal with the CB radio. I'm sure I could make some power line filters that would stop that but if I'm using the CB radio I don't want the Satellite and FM radios playing anyway. Here's a couple of pictures of what it looks like now.