Update: Eric Reuter has given permission to release his levels, if anyone finds them.
Also...I am adjusting Kagle's maps for a more oriented coop mappack, music is included in all levels, plus some fixes are made(respawning needed items for coop, once only trigger not in coop, exploding walls actors adjusted to have proper textures (I guess in the import it was nullified originally), E2L6B fixed crate collision, moved it bit to side, also changed position of nalifruits so they don't get in the way of the invisible block mover when it moves out, added new platform so you don't have to lose health when falling, etc), the maps are renamed to _f versions, I got it done, but one map is remaining and I had idea of making alternate version of E2L6B, with an asbestos suit locker, added nitrogen sliths and water changed to nitrogen...
EDIT: I am almost finished, but I can't rebuild E2L7A (when I wanted to move the first water flow bit up, because at different game speed you do not progress well and I guess on too fast computers too, you get stuck in between), it gets broken, I wonder how Kagle did it so he could rebuild it without bsp errors.
I am struggled about music choice, I wanted to use underworld, a beta track, but it sounds broken on fmod and openal, but many users sadly use these nowadays.
ANother choice was unrcirc(solitarry silhiutte) and inoxx track, deep chill. WHich one should I use?