The plugins should work a lot better for everyone, and there's even an AudioUnit now!
They are currently free, but they are also limited to a single instance and all the host control modules are disabled. Once I get the registration/licensing figured out I'll release an update that'll allow you to unlock those features.
Also the website is far from finished, but it's a little more manageable now at least...
Check it out: http://www.jasuto.com/home/
Make sure you download the correct version if you're running OSX:
10.5.x is Leopard
10.6.x is Snow Leopard