I entered a lobby area after like the main part and couldn't do a thing..
http://psumods.co.uk/viewtopic.php?f=4&t=111&start=50
Appears to be some sort of beta translation patch or the client.
Tried to connect, is it down?
Has been disconnected due to system failure.
Please wait.
[No.601]
Okay, can't seem to move after the first tutorial lesson about movement.=/
I tired the beta, and to looks like you can export your frames to PNG. Awesome.
Of course, you're going to need more than just basic limbs and a head to make a good character.
I wasn't looking around and found this, it's free and open-sourced.
http://demina.codeplex.com/
I'd would buy Spriter, but I don't buy things I think I wouldn't get much use out of.