Characters and encoding bullshit

So I've been trying to make a little C# application to parse a file name and its path to automatically tag my extensive library of music and have come upon TagLib to help me.

Now everything was going well until I fell upon some Japanese characters in my library. During parsing, it all appears to be fine, but when it executes the .Save() method, all characters become question marks (?). For example: "アールグレイ" will appear as such during debug, but on save, the actual tag will be "??????"

I have no idea if this is due to the library assuming the MP3 is in ID3v1 format, due to the .Save() method malfunctioning or something else. Has anyone used this library before and come upon a similar problem? Any idea how to fix this?

Use FIOC, Bash or Perl instead of C Shit