The Full DB Export tool for 2.x stores the WAV files in a binary "blob" format in the Access database - I had to kind of "fool it" to make this happen, it's not a standard format supported by the MDB drivers. Pulling it out on your own will be a bit tricky if that's what you're trying to do - you have to pull teh bits out, reconstruct the file on your own. It's not trivial.
On a 3.x or later systems, greetings are stored as straight WAV files in the \commserver\streamfiles\ directory. On 2.x and earlier systems they were stored in a proprietary binary format (it was intended to stream faster or something - pretty sure it didn't). Same deal with voice names.
Sub Info Dump only offers to dump WAV files for greetings and voice names in later versions of Unity as a result. On 2.x you don't have that option.
BTW, we stopped supporting 2.x over two years ago - been quite a long time since I've done anything in that code base...
