After a lot of time spent, I've finished what I consider a "working" replacement client for the rio, as well as a simple server. There's a binary distribution for those of you who dont want to bother compiling it yourselfs. There are a lot of features missing, but the infrastructure is in place to make adding them easy.

I was hoping to get a couple people to test out the distribution to see if it works for them, or if there are any problems.

http://www.reza.net/rio/rrr.html

Thanks,
Reza