Darn Mario, you beat me for making this thread. I have been playing MM8BDM for a few years now and it is a really awsome mod. But what I use for multiplayer is
Doomseeker. This app would basiclly allow you to connect to any MM8BDM server that has mods included (like TDM, CTF, Saxton Hale, Robenza, Co-Op, ect).
But in order to do that you would need to follow the OP of Cutmanmike
here(btw Doomseeker is free)
my IG name: Chris GoldHeart