OK, so it took a little longer than I planned, but I've just uploaded a new pre-release version of GameSrv. This one is mostly feature complete (it even has configuration screens!), but there hasn't been a lot of testing put into it.
So if you're feeling adventurous, please give it a try and let me know if you run into any problems. If you've been running a previous pre-release version, please let me know how the upgrade process goes (don't forget to back up your existing GameSrv directory first though!