Use a more robust method to extract mp3 metadata. This should solve a lot of issues people are having with Japanese/Kanji track names, titles, albums, etc. If you have any problems generating your library, try running this updated GenerateMyLibrary.py.
The package is now split in two. There is a 'Soundtrack' package which contains the Soundtrack folder that must be dragged to World of Warcraft/Interface/Addons. The other package 'Sound' is optional and contains the music overrides, it can be dragged into World of Warcraft/Data