[scott_s]

I think that pause-by-default is more important than keyboard support. Put another way, I don't think that "play" as in "play a movie" is the right metaphor. I think that by default, the user should control progression forward and back, like scrolling through slides or flipping the pages of a book. Each person is going to want to linger on different steps for different periods of time, because we're all going to want to read different things along with what just changed.

[vidoss]

Thanks. There is step forward / backward icons next to play. Maybe should just kill play?

[loco5niner]

Not sure either way, but if you keep play, the user should be able to click both play and pause without moving their mouse. currently, play appears a couple inches to the left of pause.

[scott_s]

That's my feeling yes, but I would check with other people, too!