Here is my take on the tserver_mfs program, and its companion script "NowShowing.tcl".
I *seriously* trimmed away all the extra stuff in NowShowing.tcl that wasn't being used by tserver_mfs. I also added compatibility for 4.0 TiVos (in case anyone is running without encryption enabled).
Also, I added a simple option to tserver_mfs to allow you to specify the path for whatever version of NowShowing.tcl you want to run. It defaults to "./NowShowing.tcl", but you can set it using the "-s <path>" command line option.
I included the binaries for both ppc and mips, and tried them out with the version of NowShowing.tcl that I included. Everything seems to work.