Hey, thanks for your interest
I'd love to see what you've been doing in relation to the client/server idea, that sounds very interesting. I'd definitely consider adding it to librigel, or at the very least include it in utils/.
Today I worked a little bit on the Win32 port of the latest code base for rigel, and with a small tweak (check for __CYGWIN__, which will make it use the same default port as linux) it compiled fine for me under Cygwin. I believe I accidentally packaged the binary for linux-x86_64 in the above tarball, which would explain why the binary wasn't loading on Windows (if you did ./rigel in cygwin's bash). Sorry about that
Make sure you're running "rigel.exe".
Tomorrow I will upload the latest version of rigel and include a windows executable.