Making a small radio?? Answered

Hey guys, I work for a radio station that has the idea of recycling old personal walkmen and connecting them to old hi fi speakers and containing them in a small box and strategically placing them around the city center, at bus stops etc.
I was wondering if anyone would know how to do this, especially at a low cost (preferably with old parts) and without needing an amp? is this possible?

Thanks,
Tony :)