Ugh, I hate being the negative nancy around here, but Wuala won’t work either.
From your first link: “Required Packages: java-1_6_0-sun, libfuse2, fuse, xdg-utils”
Fuse (http://fuse.sourceforge.net/) is a pretty cool solution for mounting pseudo-filesystems, like the one created by Wuala. The problem is fuse requires a special module to be compiled with the Linux kernel. And, surprise surprise, the DroboFS’s kernel does not have it.
The worst part is that I have tried compiling extra modules for the kernel, but so far I have not yet been successful. It seems that the way the DroboFS OS is loaded at boot time basically prevents loading modules.
I might be wrong, and someone with a better understanding of the Linux kernel can chime in and help us figure this one out, but until then this one is also a dead-end. I would say even deader than Crashplan, since Crashplan is just a lot of work, while this one may in fact be impossible (without recompiling and reflashing the FS kernel).