I must be missing something as you talk PTH files and tracks?
The app runs fine. Looks graphically better then RaceSpectator (Firefox). That one did have a remote spectator (like Victors). This app seems rather similar just dont see that feature in there?
It only works probably with HPR systems servers from the author.
He has it bundled with his hosting service. Crazy Ice is his screen name here i think (he also made Join2LFS).