Might be a while before I can check it, what command line are you using? Probably needs to specify the new codebooks (see readme). Also there is a new ww2ogg up just recently (0.20) that fixes a thing.
1. It won't work without renaming the .OGG to .WAV because your filesystem is case-insensitive, so when ww2ogg tries to create an output file with a .ogg extension (lowercase) it doesn't notice its the same and it overwrites the input while it is trying to read it. I don't know of a reliable way around this, if you rename the .OGG files to .ogg then ww2ogg will properly output files ending in _conv.ogg so as not to collide with the input.
2. This uses the old packed codebooks, so don't use the "--pcb packed_codebooks_aoTuV_603.bin" option.
The .WAV file simply isn't vorbis and I don't care to speculate on what it is.