What a pleasant surprise, a direct download from the site
My god! 3dRealms still has some degree of sanity and isn't willing to kill their professional image by dumping their stuff on ad-infested file sites?I'm downloading this for that reason alone.
Speaking of which... I've observed that Sourceforge does better than all these professional game developers at serving downloads :)
Edit:
Looks like the direct download link has been hidden away now that the game has been mirrored so many times. Thankfully, they have download.com which is just about the only one I can stand.