The codebase for MusicMUD, which started with parts of AberMUD code in it, but chucked it all when it was thought that it could had conflicted with GPL licensing, has released version 2.1.6.
I had not known previously that the source code was ever released for this new type of MUD but it has. You can take a look here:
http://www.evilmagic.org/musicmud/
Posted by abermud
at 4:31 PM CST