Can I mount a USB Olympus voice recorder built for a PC?

Hi, someone just gave me an Olympus VN-240PC digital voice recorder he didn't want anymore. I'd like to use it, but when I connect it to my PB running Leopard it never shows up in the Finder. It does show up however in the System Profiler as an "Olympus Voice Recorder" or something. And when I plug it in to my Mac, the recorder's LCD blinks "PC", like it's supposed to do when connected to a computer. Even with the free Olympus software for Macs loaded on my PB (which is admittedly not designed for this recorder), it still doesn't recognize/show the device in Finder.

Olympus apparently wants this thing to only work on a PC for some reason and never made a driver etc for it to work with a Mac, even though a Mac can handle WAV files (the format this Olympus recorder uses). Zilch at the Olympus support site for making this specific model work on a Mac.
I'm a total novice, but I tried to use the USB Prober tool, which apparently does nothing but diagnostics.
I just have trouble believing I can't simply download files from this recorder. Does anyone know of some universal Mac/PC driver that might work on this thinger? Should I just give up and through it on eBay? Thanks a lot, scott