Description:
A user interface application to use OniSplit in Windows / Mac OS. It also allows creating AEI2 packages and converting sounds easily with wizards.

OniSplit:
"OniSplit, written by Neo, is an integral part of the Anniversary Edition and an essential modding tool on its own. It is able to import and export many kinds of Oni game data, such as textures, sound, 3D models, level geometry & combat animations and is also able to split & recombine Oni's data files. It's functions supersede those of OUP & OME and is currently the community's modding tool of choice."

For discussion, and support visit this thread.

This package includes the AIE2 version. For the older version (0.6 for old AEI1) and its source code check here.