Welp, after my last post on the subject and emails to the author of Sample Tagger, I broke down and whipped out the C#. After a bunch of hours, I have this:

It indexes a directory tree on the left, shows any .WAV files that are in it on the right when selected. Selecting a WAV file plays it (or you can hit the play button). And you can drag and drop the files into any audio application I've tried (Ableton Live & Sound Forge). Next is library saving and tagging I guess.

Can I also say how freaking annoying it is searching for Microsoft development related documentation and tips and examples on the web? Let's see, first there's the difficult-to-search-for terms: C#, .NET, ADO.NET, etc. Then there's all this other crap that gets in the way like ASP.NET, .NET being available in a billion different languages (C++, C#, Visual C++, Visual C#, Visual Basic, J#, etc, etc) so even if you do find what you want, it's probably not in the right language or platform. Frustrating.