Yup. Looks like that must be it.
VLC rip wav vs. WMP rip wav
The first 255 bytes of WMP rip wav has various differences compared to the first 39 bytes of VLC rip wav. Guessing this is header and metadata differences.
The last 32928 bytes of WMP rip wav are additional compared to VLC rip wav. Guessing based on size that this may be a default embedded image. Perhaps that music note image WMP displays. But just a wild guess that is more likely wrong than right.
Everything in between is bit exact.
WMP rip wav vs. Audacity exported wav
The first 255 bytes of WMP rip wav has various differences compared to the first 39 bytes of Audacity exported wav. Looks like the differences have to do with the WAVELIST INFOIART and other metadata.
Last 279 bytes of Audacity exported wav are additional compared to the WMP rip wav. The LIST, INFOINAM metadata appear to be here instead of at beginning.
Everything in between is bit exact.