I think the delta between podcasting and steaming (sic) is even larger than you intended! In any case, of course those 67.7% own an MP3 player...it's called a desktop (or laptop) computer. But therein lies one of the faults of the way podcasting is currently being promoted. By focusing the attention on iPods, and marginally on other portable MP3 devices, the majority of the potential listening audience is being completely overlooked.