Seeing as I am going through a great big cluster-fuck everyone knows and hates, School, I won't be working on T-DOOM anymore. So, enjoy the mod!
For more details, visit Forum.zdoom.org
For those that don't know how to install and play the mod.
Download the latest GZDoom engine (g 2.1.1) or Dev Version of Zandronum 3.0 (Zandronum Version 3.0 alpha r160519-2047 is what I use, and I recommend it.)
Extract your doom IWAD's into the folder in which you put your gzdoom.exe/zandronum.exe in. (this means DOOM2.wad, or DOOM.wad) If you bought and installed Doom 3: BFG Edition, Doom, Doom 2, or Final Doom on Steam, your engine will automatically detect the IWADS.
When you made sure that your doom source port works, drag and drop TDOOM Public Beta v2.wad on to your engine, and choose your IWAD to play.