Sound importing issues (Professor Layton and the Curious Village)

[SteveDoido]

I am currently working on a fandub for Professor Layton and the Curious Village, and have found the following issues:

• Lack of multi-channel (specifically Stereo) support, despite the game's audio being in Stereo;
• Files MUST be smaller than the originals;

As such, here's an exemple of a file it outputs and a file it accepts for input (output.wav and input.wav respectively):

example.zip

Now, I perfectly understand these being here now (specially the stereo one, since the program does not support entries other than mono), but is there a way you can fix those?