Thanks for the great work Zorbfish.
I think Metroid means the "gaps" between the tracks,you can include the gaps in the files or cut them clean when ripping a CD,that makes the track length different.
As to the ja encoding,sure UTF isn't that widespread but to those who use non-japanese-non-unicode windows,the Shift-JIS encode will just mess up everything...
And by the way I'd really like to see
Mp3tag work with the VGMdb CDDB.