This is the newest mod I am currently working on for Wolfenstein 3D, it runs on the Wolf4SDL engine which Ripper (Chaos-Software), has just recently released.
This engine is a significant improvement from the original engine, and Wolf\4GW. It also runs on PC\Vista. Also has 8 sound channels to play the sounds, and doesn't need any emulators to run the adlib\sound blaster.
I am not too far yet, just working on several features, none for ingame shots, that'll come in due time.