I too hope you try different browsers, or whatever it takes to see the videos - I like to think I've gotten pretty good at making them :-D
The spinning wheel issue that Buzzbee mentioned is the symbol you see as a video starts to load and stream, even I couldn't get one video to play (strangely PDMattox could see it) but I just deleted it and reinstalled the file. After that, it has played fine as they all do.
I have 7 videos now, enough footage of stuff for 3 more as I play around here. Editing is fun, I'm adding new techniques with each video, so as I grow in skill, hopefully someday I'll have a real winner there. But it's a shame you are having trouble - something simple (a currupt files that won't over-write) or something is preventing your player from upgrading the most recent player. Flash 10 gave me a headache and one day it started working, so go figure. Good luck and I hope you get it resolved really soon.