But as people discovered they weren't that great.
http://www.amazon.com/TrekStor-i-Beat-xtension-Player-Radio/dp/B000NDZ0O0/ref=sr_1_63?ie=UTF8&s=electronics&qid=1219101480&sr=1-63 is another variety you encounter but again I expect these to vanish over the next year or two.
I am looking for a portable (iPod sized) device that has a USB INPUT on it as a way of expanding/creating memory.
Seems odd to me that I cannot find something like this. There are in-dash car stereos that will take a USB flash drive and play music on it, but no portable devices? Odd... anyone know of something like this?