Go buy a cheap portable stereo that you can run on D-cell batteries. You can move the stereo/cd /AM/FM around the boat and will pay a fraction of what an installed system costs. When it dies, go buy another one. Not sexy but very practical. Or, get an iPod with rechargeable speakers. Much more bang for the buck. Don't forget, electronics and water and a bad combination.

Bob Rude
"Mmmmm"