Solar Powered Wireless Speaker System

It is too quiet in our backyard, and our neighbours are having too nice a time. We need some big honking speakers to blast some rap round the block, but don't want to be tripping over wires. Here is the answer: a waterproof, solar powered 900 Mhz speaker system that will work 150 feet away from the stereo. Only 7 rechargeable AA batteries pump out 5 glorious watts, for just US $150. We don't know how late into the evening we can serenade our neighbours but it will be fun to find out. ::Red Ferret