Keep stupid wanky names for mainstream / commercial crap.
Anyone who really cares about a cool sounding name will just be using Microsofts client anyway.
Mac users, anyone?
Ayemesene, lol :p
But in french, it's "aemesene" (where the "a" sounds as in "car" not as in "care"), so it's not an international name :p
So, the name has to be portable too? XD
what about this dumb sugestions:
aMSNtwo ? XD
Windows Vista => amsn preview (vista, english for view/vision)
mlmsnc ? multi lib msn clone
... just kidding