By itself, the file won't allow Zoomer users to play WAV files. It _will_ enable programmers to more easily create a WAV file player. But there is no WAV player application included in WAV.ZIP.
You can find the file by going to keyword GEOWORKS and clicking on the "Programming for GEOS" button. Or you can go to keyword GEOSDK (GEOSDK should be available to anyone now).
The file is copyrighted and may not be redistributed without permission.
There exists a WAV file player written by a third party programmer who has chosen, so far (as of this writing), not to distribute it to the public. When I asked why, I was told the programmer didn't want to have to provide customer support for it.
Steve