Sorry, when I posted the last idea I didn't think. Yea, it would have to be a client-side program. It could convert the tilesets and levels to 1.23 format on-the-fly (it that's possible) after they were downloaded from the server (I know it would need a modification of jazz2.exe). It would also convert the animations so that the player won't know its a tsf server (lori could use spaz animations). It would be possible to instead of changing jazz2.exe you could use the program as a launcher (like JazzTool) and it would create a local network server (not using jazz2.exe) and jazz2.exe would be ran with getting on that server with command-line parameters while the program would receive all data from the server on the internet and send it to jazz2.exe via the network server.