I know it's an old thread, but since this popped up on google and other news user might find this as well, I thought I'd post the answer I found:

There's a free software DVD-Shrink that runs on windows. It's not nearly as fast as DVD2One, but on it's highest quality (about 2 hours encode time on a 3400+ AMD) it has slightly noticably higher quality than DVD2one. It also provides more features (such as picking the compression quaility for each video on the disk, rathern than treating everything the same.) On it's lowest quality, it encodes in about 30 minutes, but with significantly worse quality than DVD2One.

I'm only mentioning it, since it runs fine in Wine on linux. Find Ubuntu instructions here: http://www.mrbass.org/linux/ubuntu/dvdshrink/
Note that everything in the instructions will be the same for most distros after the apt-get commands. If wine works on FreeBSD, this should be a viable solution there. Runs great on Gentoo!

While I would definately purchase DVD2One for linux if it were released (since you can't beat the speed/quality ratio) I'm not sweating it... The free solution works just takes a little longer...