Editing .at3 files?

[Dirty Bomb]

I've noticed in the Sengoku Basara image file that all the sound data is easy to get to and they're all in .at3 files. I've taken the same files from the Japanese version of the game and replaced the USA files with the Japanese ones. I tested this with the character select screen and the file played correctly, but crashed as soon as the file got done playing.

I was wondering if there was a way to edit the .at3 file so I could edit the file to match the same size/length as the original USA file on the game image.

[RiPPERD]

.at3 files need the creative codec (or used to back when i had my mini disc player)

they are sound files... open with nero wave editor and play with them... you can down sample em to save space at loss of quality