Both XM Satellite Radio (NASDAQ:XMSR) and Sirius (NASDAQ:SIRI) have seen their stocks tumble recently. What does the future hold for satellite radio? Will Apple's (NASDAQ:AAPL) iPod spell the end of XM and Sirius? In this installment of Fool Video, I talk with Fast Company co-founder William Taylor, author of Mavericks at Work: Why the Most Original Minds in Business Win.